The British embassy in the Yemeni capital Sanaa has reopened after being closed for 12 days because of security concerns. \"British Embassy #Yemen open as normal from Sunday 18 August. Apologies for the brief hiatus,\" British Ambassador Jane Marriott tweeted. Britain was among several Western countries which closed their embassies on August 4 following US warnings of an al-Qaeda attack. A few days later it withdrew all diplomatic staff. The alert was reportedly linked to the interception of communications between al-Qaeda leader Ayman al-Zawahiri and the leader of the group\'s Yemen-based affiliate, Nasser al-Wuhayshi.