The US-Gulf regimes war in Yemen

"This US-backed war is not just a case of the Obama administration sitting idly by while its close ally goes on a destructive spree of historic proportions. The government is actively selling the Saudis billions of dollars of weaponry. They’re re-supplying planes engaged in the bombing runs and providing “intelligence” for the targets that Saudi Arabia is hitting. Put simply, the US is quite literally funding a humanitarian catastrophe that, by some measures, is larger than the crisis in Syria." (thanks Amir)