"Recent talks between Saleh and the opposition, some held in the presence of the U.S. ambassador, yielded little. Sources close to the talks in Sanaa say the United States gave Saleh an ultimatum to accept a deal and has since lost patience. But some said Saleh listened more attentively to Riyadh. "I don't think the United States is a player, they have much less influence ... the only country Saleh cares about is Saudi Arabia," said analyst Barak Barfi of the New America Foundation. "If the U.S. cuts off military aid, it hurts them as much as Saleh and he knows it... The Yemenis need pressure from Riyadh."" (thanks Stevy)