The US embassy in Yemen reopened on Tuesday, after a two-day closure prompted by al-Qaida threat against Western interests in the Arab country. A statement posted on the embassy's Web site said successful counter-terrorism operations conducted by Yemeni security forces had addressed specific concerns. <br/><br/>The statement said, however, the threat of terrorist attacks against American interests remains high and the Embassy continues to urge its citizens in Yemen to be vigilant and take prudent security measures. The British embassy in Yemen followed suit just a few hours after the US move, while Spain decided to close its mission in Yemen for Monday and Tuesday.