The U.S. is revving up its drone war against militants in Yemen with the support of the new government there. The U.S. has ordered dozens of drone attacks. The U.S. is particularly interested in attacking bases of AQAP (Al Qaeda in the Arabian Peninsula).
Back in Sept. last year drone attacks killed the U.S. citizen Anwar al-Awlaki who was a propagandist for Al Qaeda. Later his son and nephew were also killed in drone attacks.
Since last May 26 attacks have been recorded..There have been nine attacks in 2012 already five in March. Thirty militants were allegedly killed in 3 attacks on the city of Zinjibar held by a militant group. The number of attacks this year are comparable to the ten that have taken place in Pakistan.
The Bureau of Investigative Journalism in the UK haas estimated that as many as 516 have been killed in drone attacks. Over a hundred were civilians.
The attacks are mounted mostly from a base in Djibouti by the CIA or U.S. special forces command. However no details are ever confirmed about the missions. Amnesty International among other groups has called on the U.S. to take responsibility for its covert actions and to investigate evidence of mulitple civilian deaths. For more see this article.