Senate Committee on Appropriations Subcommittee on State, Foreign Operations and Related Programs Chairman, South Carolina Republican Sen. Lindsey Graham speaks during a hearing on the fiscal year 2016 funding request for the State Department on February 24, 2015 in the Dirksen Senate Office Building on Capitol Hill in Washington, DC. Iran’s support for Shiite rebels in Yemen “contributed” to the militia’s takeover of the Yemeni capital and the collapse of the government, US Secretary of State John Kerry said Tuesday. Speaking to US lawmakers at the start of two days of intense budget hearings, Kerry agreed Tehran’s support for the Huthi militia was “critical” in shoring up the rebels. AFP PHOTO/MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)