The United States will reopen all of the embassies it shut this week except the one in Yemen, after re-assessing the Al-Qaeda threat.
Three strikes carried out by American drones have killed at least 14 people in Yemen, officials say.
Yemen said Wednesday it had foiled an Al-Qaeda plot to storm a Western-run oil terminal and seize a port city, as a terror alert kept US Middle East missions closed.
Yemeni security forces have been put on high alert amid warnings of an imminent attack by al-Qaeda in Sana'a.
The United States has warned its warships in the Middle East region to prepare for a possible attack by al-Qaeda network.
A US assassination drone attack has killed at least four people in Yemen's central province of Marib.
The US closed 21 of its embassies and consulates in the Middle East this weekend, including Yemen and Libya following threats from al-Qaida who might possibly target either American government or private interests.
A US drone has killed four people in Yemen Thursday, a security official says, the third such strike in five days as the Yemeni president prepared for White House talks.
A US assassination drone strike has killed six people in Yemen’s southern province of Abyan overnight.
A high-ranking Iranian official says the Islamic Republic will soon dispatch a delegation to Yemen to investigate the fate of an Iranian diplomat recently abducted in the Arab country.