Overnight drone strikes killed at least 20 suspected Al-Qaeda militants in Yemen, where Washington has conducted a sustained drone war against militant leaders

Overnight drone strikes killed at least 20 suspected Al-Qaeda militants in Yemen, where Washington has conducted a sustained drone war against militant leaders, tribal sources and witnesses said on Tuesday.
  
The twin raids targeted Al-Qaeda positions near Rada, a central town which has been the focus of deadly fighting between the militants and advancing Houthis, the sources said. The United States is the only country operating drones over Yemen, but US officials rarely confirm individual strikes.