Four protesters have been killed in the Yemeni cities of Sanaa and Taiz when security forces opened fire on pro-democracy protesters. <br /><br />Anti-government protests have engulfed the country for more than two months. <br /><br />On Tuesday, the UN Security Council was briefed on the situation in Yemen for the first time, but the UN body was unable to agree on a statement proposed by Lebanon and Germany expressing concern at the political crisis.<br /><br />The Security Council met as a Yemeni government delegation headed to nearby Abu Dhabi, in the United Arab Emirates, for talks with the six-nation Gulf Co-operation Council over a proposal for Ali Abdullah Saleh, the president, to transfer power to his deputy to end the crisis.<br /><br />The opposition held similar talks in Saudi Arabia on Sunday.<br /><br />Susan Rice, the US ambassador to the United Nations, told reporters after the closed Security Council meeting that "there were several delegations that wanted instruction from (their) capitals".<br /><br />Al Jazeera's Khadija Magardie reports.