Russia further elevated concerns about global catastrophe on Tuesday as its \u0022nuclear submarines sailed off for drills in the Barents Sea and mobile missile launchers roamed snow forests\u0022 in Siberia just days after Russian President Vladimir Putin invaded Ukraine and put his nation\u0026#039;s nuclear forces on \u0022special alert.\u0022\r\n\r\n\u0022Drills with nuclear weapons are never acceptable and are particularly dangerous in tense times.\u0022\r\n\r\nAnti-nuclear campaigners who have condemned the Russian leader\u0026#039;s actions over the past week also blasted the military exercises that Russia\u0026#039;s Northern Fleet said were designed to \u0022train maneuvering in stormy conditions,\u0022 according to the Associated Press.\r\n\r\nThe International Campaign to Abolish Nuclear Weapons (ICAN) tweeted the report and said that \u0022drills with nuclear weapons are never acceptable and are particularly dangerous in tense times.\u0022\r\n\r\n\r\n\r\nThe AP reported that the Russian military \u0022didn\u0026#039;t say whether the drills were linked to Putin\u0026#039;s order on Sunday to put the country\u0026#039;s nuclear forces on high alert amid Russia\u0026#039;s war in Ukraine. It also was unclear whether the exercises represented a change in the country\u0026#039;s normal nuclear training activities or posture.\u0022\r\n\r\nAlong with demanding an end to the \u0022illegal\u0022 invasion, ICAN said Sunday that Putin\u0026#039;s alert order \u0022is incredibly dangerous and irresponsible, especially during a time of war and high tension.\u0022\r\n\r\nThe group urged all nuclear-armed states to stand down their forces and \u0022refrain from threatening to use weapons of mass destruction,\u0022 warning that any use of them \u0022would cause catastrophic humanitarian suffering and the fallout—radioactive, economic, political.\u0022\r\n\r\nICAN continued:\r\n\r\n\r\nRight now, the dangerous policy of so-called nuclear deterrence is used to enable the continued invasion of Ukraine by Russia. It does not keep the peace, it allows for war to be carried out against Ukrainian people.\r\n\r\nAny theory which is based on the willingness to mass murder civilians and is kept in check by little more than sheer luck will eventually lead to a horrific humanitarian catastrophe. That\u0026#039;s what is being risked right now, and it must stop.\r\n\r\n\r\nRussia and the United States collectively account for about 90% of all nuclear warheads, according to the Federation of American Scientists. Both countries have subs, land-based systems, and bombers capable of launching the weapons.\r\n\r\nDuring Putin\u0026#039;s speech last week announcing the invasion of Ukraine—an air and land assault that has included alleged war crimes—the Russian leader made what was widely seen as a thinly veiled threat to retaliate with nuclear weapons if any other nation intervenes.\r\n\r\nAnti-war campaigners have also responded with alarm to a Monday referendum that paves the path for Belarus to host Russian nuclear weapons.\r\n\r\n\r\n\r\nDespite the recent developments, the Biden administration so far has not changed U.S. nuclear alert levels.\r\n\r\nWhile denouncing Putin\u0026#039;s war in Ukraine and imposing economic sanctions, U.S. President Joe Biden has indicated he does not plan to engage in a military conflict with Russia.\r\n\r\nWhite House Press Secretary Jen Psaki made clear Monday that the Biden administration will not impose a no-fly zone, emphasizing that implementation could require the U.S. military to shoot down Russian planes, which could lead to a full-blown war with Russia.\r\n\r\n\r\n\r\nWriting Tuesday for Responsible Statecraft, Emma Claire Foley of Global Zero outlined various scenarios that could result in nuclear action over Ukraine, from Putin making good on his threats to \u0022an accidental first strike in response to misinterpreted or incorrect intelligence or uncontrolled escalation of a relatively small-scale, conventional military incident.\u0022\r\n\r\n\u0022Very little seems certain about the tragic situation in Ukraine or the future of U.S.-Russia relations,\u0022 she wrote. \u0022But as long as the status quo around nuclear weapons persists, the real risk of escalation from a regional conflict to a global conflagration will be with us. The difficult question that must be answered is how we build a path out of the darkness of the present moment to a world free from their threat.\u0022\r\n\r\nICAN continues to call on all countries, especially the nine nuclear-armed nations, to join the Treaty on the Prohibition of Nuclear Weapons, which entered into force last year.