"I think it is a real concern because the most active and at this point perhaps the most aggressive branch of Al-Qaeda operates out of Yemen"

Yemeni President Ali Abdullah Saleh's eventual fall or his replacement by a weaker leader would pose "a real problem" for US “counter-terrorism” work, Defense Secretary Robert Gates said Sunday.
 
In an interview with ABC television, Gates said Saleh's government and the Yemeni security services have helped the United States in fighting Al-Qaeda's Yemeni branch. "I think it is a real concern because the most active and at this point perhaps the most aggressive branch of Al-Qaeda, Al-Qaeda in the Arabian Peninsula, operates out of Yemen," Gates said.
  
"And we've had counter-terrorism cooperation with President Saleh and the Yemeni security services," the defense secretary added. "So if that government collapses, or is replaced by one who is dramatically more weak, then I think we'd face some additional challenges out of Yemen, there's no question about it. It's a real problem," he said.
  
Saleh, in power for more than 30 years, has been a key US ally in its fight against the active Al-Qaeda branch operating out of his country. Alongside drone attacks targeting Al-Qaeda, the United States over the last 18 months has also dispatched "dozens" of CIA operatives and even Special Operations military troops to operate alongside Yemeni forces to counter and disrupt the group's operations, the Post said.