Yemen says Houthi rebel leader may be dead. Reuters. 2009-12-27 [2014-09-24]. (原始内容存档于2014-10-06). Mohammed Abdul Salam denies news in Saudi channel. Yemen
of Saudi oil scramble for alternatives, U.S. exports ramp up. Reuters. 2019-09-16 [2019-09-18]. (原始内容存档于2019-09-16). Houthi drone attacks on 2 Saudi Aramco