Yemen and its foreign partners have agreed to work together to fight the threat of al-Qaeda.
US Secretary of State Hillary Clinton told the international conference in London bringing unity and stability to Yemen was an urgent national priority.
Donors from Western and Gulf countries have also agreed to meet in the Saudi capital, Riyadh, in February.
The meeting was prompted by the failed Christmas Day alleged bid to blow up a US plane, claimed by al-Qaeda in Yemen.
Ministers and officials from some 20 Western and Arab countries gathered to discuss security and wider economic and political problems facing Yemen, the poorest state in the Arab world.