World Bulletin / News Desk
Sanaa was captured in September by the Shi'ite Muslim Houthi militia, which placed President Abd-Rabbu Mansour Hadi under house arrest and forced him to announce his resignation. Arab and Western states this month evacuated their Sanaa embassies.
Parliament never approved the resignation, and on Sunday Hadi fled to Aden where he has set up a new seat of power.
UAE Minister of State for Foreign Affairs Anwar Gargash said the UAE had made its decision "in order to entrench constitutional legitimacy in Yemen, embodied by President Abd-Rabbu Mansour Hadi and his government", according to WAM news agency.
The ascendancy of the Houthis is viewed with alarm by the Gulf's mostly Sunni Muslim rulers.
The Gulf Cooperation Council has denounced the Houthi takeover as a coup and fears Shi'ite Iran may gain influence on the peninsula by backing the group.