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“Every fraction of a degree means more hunger, displacement, and loss—especially for those least responsible,” said UN Secretary General António Guterres on Thursday. “This is moral failure—and deadly negligence.”
As world leaders gathered in Brazil for this year's global summit on the accelerating climate crisis this week, many took note of the absence of US President Donald Trump.
This year’s United Nations Climate Change Conference (COP30) summit comes on the tenth anniversary of the Paris Climate agreement, in which nations committed to adopting policies intended to keep global temperature increases below the threshold of 1.5°C above preindustrial levels, considered a tipping point at which many of the worst ravages of climate change will become irreversible.
Ten years later, progress has fallen far short of the mark, with leaders scrambling to keep the deal’s goals intact—an aim that is likely untenable without the cooperation of the US, the globe’s largest historical emitter of carbon.
America’s president has not only once again pulled the US out of the Paris agreement, but also sought to turn climate denial into public policy and spent his term in office thus far grinding American investment in renewable energy to a halt—actions viewed as extraordinary abdications of responsibility at a time when the globe is ever more rapidly approaching the point of no return for warming.
Fresh on climate advocates' minds are Trump’s comments at the UN General Assembly in September, when he described climate change as the world’s “greatest con job.”
On Thursday, the World Meteorological Organization found that greenhouse gas emissions had reached a record high. Meanwhile, 2025 is on track to be the third hottest year on record, behind only 2024 and 2023.
“Every fraction of a degree means more hunger, displacement, and loss—especially for those least responsible," said UN Secretary-General António Guterres on Thursday. "This is moral failure—and deadly negligence."
Brazilian President Luiz Inácio Lula da Silva, who has emerged as one of the world's leading climate defenders from the heart of the Amazon rainforest, began the conference by delivering an indirect but unmistakable shot at Trump. He denounced the "extremist forces that fabricate fake news and are condemning future generations to life on a planet altered forever by global warming."
Other Latin American leaders were more direct. Colombian President Gustavo Petro, whom Trump recently hit with sanctions and threatened with military action, denounced the US president as "against humanity," as evidenced by "his absence" at the conference.
"The president of the United States at the latest United Nations General Assembly said the climate crisis does not exist," added Chilean President Gabriel Boric. "That is a lie."
In Trump's stead, over 100 other state and local figures from US politics have traveled to Brazil to take part in the conference: Among them are California Gov. Gavin Newsom, New Mexico Gov. Michelle Lujan Grisham, and Wisconsin Gov. Tony Evers.
Another attendee is Phoenix Mayor Kate Gallego, chair of the Climate Mayors network, who recently applauded Tuesday night’s elections in the US. More than 40 candidates associated with the network came out victorious, as well as the self-described ecosocialist New York City Mayor-elect Zohran Mamdani.
“Our climate mayors did very well on the ballot,” Gallego said to applause at a local leaders forum for COP30. “We want to send this message from the US.”
But despite the US delegation, even with officials from the Trump administration absent, climate campaigners fear the White House may still seek to sabotage the conference from afar. Last month, the administration did just that when it used the threat of tariffs to strong-arm countries into killing what would have been a global-first carbon fee on shipping.
Even without Trump present, COP30 is crawling with fossil fuel lobbyists seeking to stymie progress. A report released Friday from the climate advocacy group Kick Big Polluters Out found that over 5,350 fossil fuel lobbyists have attended UN climate negotiations over the past four years. The corporations they represent are responsible for more than 60% of global emissions.
“These companies have defended their fossil interests by watering down climate action for years," said Fiona Hauke of the German environmental group Urgewald. "As we head towards COP30, we demand transparency and accountability: Keep polluters out of climate talks and make them pay for a just energy transition.”
The leftist Colombian president retorted that "US government officials have committed a murder and violated our sovereignty in territorial waters."
The United States carried out another deadly attack on a boat it claimed was being used by a left-wing Colombian revolutionary group to transport drugs in the Caribbean Sea, Defense Secretary Pete Hegseth said Sunday, hours after President Donald Trump alleged without evidence that Colombia's president "is an illegal drug dealer."
Hegseth said the strike, which took place on Friday, targeted "a vessel affiliated with Ejército de Liberación Nacional (ELN), a designated terrorist organization."
The ELN is Colombia's last-standing far-left guerrilla group. Founded in 1964, the group fought to liberate Colombia from longtime right-wing rule, end foreign influence—especially from the United States—and achieve social justice and equality for the poor. ELN has been accused of using proceeds from drug trafficking to fund its insurgency.
"The vessel was known by our intelligence to be involved in illicit narcotics smuggling, was traveling along a known narco-trafficking route, and was transporting substantial amounts of narcotics," Hegseth said without offering evidence. "There were three male narco-terrorists aboard the vessel during the strike—which was conducted in international waters. All three terrorists were killed and no US forces were harmed in this strike."
"These cartels are the al-Qaeda of the Western Hemisphere, using violence, murder and terrorism to impose their will, threaten our national security, and poison our people," the defense secretary added. "The United States military will treat these organizations like the terrorists they are—they will be hunted, and killed, just like al-Qaeda."
Hegseth's announcement followed a post by Trump on his Truth Social network calling leftist Colombian President Gustavo Petro "an illegal drug leader strongly encouraging the massive production of drugs."
Trump offered no evidence to back his baseless claim. The US itself has a long history of involvement in the international drug trade, from American capitalists profiting immensely from opium trafficking in the 19th century to the Central Intelligence Agency working with narcotrafficking anti-communist groups in Southeast Asia and Central America during the Cold War, helping to fuel first the heroin and later crack cocaine epidemics in the United States.
The US president further alleged that drugs have "become the biggest business in Colombia, by far, and Petro does nothing to stop it, despite large scale payments and subsidies from the USA that are nothing more than a long-term rip off of America."
Trump added:
AS OF TODAY, THESE PAYMENTS, OR ANY OTHER FORM OF PAYMENT, OR SUBSIDIES, WILL NO LONGER BE MADE TO COLOMBIA. The purpose of this drug production is the sale of massive amounts of product into the United States, causing death, destruction, and havoc. Petro, a low-rated and very unpopular leader, with a fresh mouth toward America, better close up these killing fields immediately, or the United States will close them up for him, and it won’t be done nicely.
According to The Associated Press, Colombia received an estimated $230 million in US aid for the budget year that ended on September 30.
Trump has ordered attacks on at least seven alleged drug-running boats without providing concrete evidence to support his claims. At least 29 people have been killed in the attacks.
In a series of posts on the social media site X, Petro said that "US government officials have committed a murder and violated our sovereignty in territorial waters," repeating claims that some victims of the US strikes, including Thursday's, were fishermen.
"I respect the history, culture, and people of the USA," Petro wrote in a subsequent post. "They are not my enemies, nor do I feel them as such. The problem is with Trump, not with the USA."
Refuting Trump's accusation that he has "done nothing to stop" drug trafficking, Petro noted that "we have reduced the coca leaf crop growth rate to almost 0%. In past governments, there were years with nearly 100% annual growth. Today, half of the total coca leaf crop area has crops that have been abandoned for three years."
The Trump administration said Thursday that survivors of one recent strike, a Colombian and an Ecuadorean, would be repatriated to their respective countries, possibly as a way to skirt concerns over the legality of the attacks.
On Thursday, Hegseth said that US Southern Command chief Adm. Alvin Holsey—who is overseeing the boat attacks—will step down at the end of the year. Holsey's resignation reportedly stems from concerns over the strikes.
"If Commander Alvin has resigned for refusing to be complicit in the murder of Caribbean civilians by US missiles deliberately launched against them from comfortable offices, I consider him a hero and a true officer of the armies of the Americas," Petro said in response to the news. "I said in New York, on one of its streets, that I asked the officers of the US military forces not to aim their weapons at humanity."
The Trump administration revoked Petro's US visa following his speech.
"I believe that Commander Alvin has proven himself to be a man of worth by refusing to aim his weapons at humanity. Perhaps Commander Alvin does not know it, but he is a true officer of the armies of Washington and Bolívar," Petro added, referring to George Washington and the great South American liberator Simón Bolívar.
On his first day back in the White House in January, Trump signed an executive order designating drug cartels as foreign terrorist organizations. Last month, the president reportedly signed a secret order directing the Pentagon to use military force to combat drug cartels abroad, sparking fears of renewed US aggression in a region that has endured well over 100 US attacks, invasions, occupations, and other interventions since the issuance of the dubious Monroe Doctrine in 1823.
Trump has also deployed a small armada of naval warships off the coast of Venezuela, which has endured more than a century of Washington's imperialist meddling, raising fears of yet another US war of choice and regime change.
"What the US government is doing to me breaks all the norms of immunity on which the functioning of the United Nations and its General Assembly is based," Petro said.
The Trump administration on Friday revoked left-wing Colombian President Gustavo Petro's visa after he spoke to crowds of protesters in New York City, urging US soldiers not to point their guns at innocent civilians and to disobey the orders of US President Donald Trump.
The US State Department wrote on social media on Friday that Petro had "urged US soldiers to disobey orders and incite violence" and that it would revoked Petro's visa "due to his reckless and incendiary actions."
"Mr. Trump has violated the founding principles of the UN," Petro wrote on social media Saturday in response to the news.
Petro, who was in New York to attend the United Nations General Assembly (UNGA), criticized Trump in a speech before the UN on Tuesday, in which he called him "complicit in genocide" for backing Israel's war on Gaza and urged the UN to open criminal proceedings against Trump's air strikes on boats in the Caribbean alleged to be transporting drugs.
"This is the first time the US revokes a head of state’s visa for comments made during a UNGA visit."
While the Colombian leader had returned to his home country by the time he learned his visa had been revoked, he condemned the move as a major breach of international law.
"What the US government is doing to me breaks all the norms of immunity on which the functioning of the United Nations and its General Assembly is based," Petro wrote on social media on Saturday.
He pointed out that heads of state attending UN proceedings are supposed to receive total immunity.
"The fact that the Palestinian Authority was not allowed entry and that my visa was revoked for asking the US and Israeli armies not to support a genocide, which is a crime against all of humanity, demonstrates that the US government no longer complies with international law," Petro continued. "The United Nations headquarters cannot continue to be in New York."
Petro was not the only one to question whether the UN could continue to meet in the US after the Trump administration's actions.
"This is the first time the US revokes a head of state’s visa for comments made during a UNGA visit," Center for Economic and Policy Research senior research fellow Francisco Rodríguez pointed out on social media. "Both [Fidel] Castro and [Hugo] Chávez gave fiery off-site speeches in NY without retaliation. The action undermines the UN’s viability as a global forum and risks violating the 1947 HQ Agreement."
The agreement states in part that those granted immunity to attend UN gatherings "shall not be required to leave the United States otherwise than in accordance with the customary procedure" applied to all diplomats.
Craig Mokhiber, a human rights lawyer and former UN official, wrote: "This is just the latest breach of the obligations of the US to the UN. Member states must get serious about moving the UN to a safer host country. And the US-Israel axis must be held accountable."
Israel's nearly two-year assault on the Gaza Strip, which several human rights experts and bodies including a UN commission have named a genocide, was a key point of contention during the 80th session of the UNGA.
Petro emerged as a major voice in defense of the Palestinians in Gaza, calling for the creation of an international armed force to enter Gaza and end the genocide.
He repeated that call when he spoke to protesters outside the UN on Friday, as Israeli Prime Minister Benjamin Netanyahu was scheduled to speak.
"It is necessary to configure a more powerful army than that of the United States and Israel combined," Petro told the crowd.
It was also during this speech that he urged US soldiers to "disobey the orders of Trump" and "obey the orders of humanity," according to Reuters.
Colombia's Interior Minister Armando Benedetti wrote on social media that Netanyahu's visa should have been revoked instead.
"But since the empire protects him, they go after the only president who was capable of telling him the truth to his face," Benedetti said.