An explosion tore through a residential neighborhood in Yemen\u0026#039;s capital on Monday, as Saudi coalition air strikes continue to pound the city amid a mounting nation-wide humanitarian crisis worsened by dangerously low supplies of food, medicine, and water.The coalition bombing on Monday unleashed an eruption through a civilian area in the Faj Attan area of Sana. Buildings were flattened, windows were broken, and according to witnesses, the event felt like an earthquake. Media outlets say the eruption may have been caused when an air strike hit a munitions cache.Hospitals were reportedly inundated with the dead and wounded, and efforts to retrieve survivors from the rubble are ongoing, in an area that has suffered repeated bombings since the coalition bombings began March 26.People in Yemen turned to social media to document the aftermath.A compilation of photos from my apartment. After today\u0026#039;s explosion compared with better days. #WarLife #LifeUnderFire pic.twitter.com/hWIynbzQ41— Ammar Al-Aulaqi (@ammar82) April 20, 2015Since March 26, the Saudi-led bombing campaign has struck markets, schools, medical facilities, power plants, and refugee camps.The international aid organization Oxfam said that, on Sunday, the coalition bombed a warehouse containing \u0022vital humanitarian aid\u0022 in the northern governate of Saada.\u0022This is an absolute outrage particularly when one considers that we have shared detailed information with the Coalition on the locations of our offices and storage facilities,\u0022 declared Grace Ommer, Oxfam\u0026#039;s country director in Yemen, in a press statement released Monday. \u0022The contents of the warehouse had no military value. It only contained humanitarian supplies associated with our previous work in Saada, bringing clean water to thousands of households.\u0022The war, which is led by Saudi Arabia and now includes the United States, Kuwait, Qatar, the United Arab Emirates, Bahrain, Jordan, Egypt, Sudan, and Morocco, is being waged against one of the poorest countries in the world.So far, 18 of Yemen’s 22 governates have been affected by air strikes, according to the United Nations Office for the Coordination of Humanitarian Affairs. Meanwhile, fighting continues to intensify in the south, with the port city of Aden especially hard hit.The World Health Organization reports that at least 767 people have been killed and 2,906 wounded in the conflict since March 19, in what are believed to be dramatic under-counts of the actual toll. The UN Office for the Coordination of Humanitarian Affairs says at least 150,000 people have been displaced.Aid organizations warn that coalition partners, including the U.S., may be guilty of war crimes, and Houthi combatants have also been accused of killing civilians.Meanwhile, from within Yemen and around the world, people are calling for an end to the fighting.Last week, U.S. and U.K. Yemen scholars published an open letter condemning the Saudi-led campaign:This military campaign is illegal under international law: None of these states has a case for self-defense. The targets of the campaign include schools, homes, refugee camps, water systems, grain stores and food industries. This has the potential for appalling harm to ordinary Yemenis as almost no food or medicine can enter.Yemen is the poorest country of the Arab world in per capita income, yet rich in cultural plurality and democratic tradition. Rather than contributing to the destruction of the country, the US and UK should support a UN Security Council resolution demanding an immediate, unconditional ceasefire and use their diplomatic influence to strengthen the sovereignty and self-government of Yemen. As specialists we are more than aware of internal divisions within Yemeni society, but we consider that it is for the Yemenis themselves to be allowed to negotiate a political settlement.