.... fighting in the north, fighting in the south, air strikes, increased foreign media/political interest/pressure. ..
"An American-born radical Islamist, believed to have links to the Fort Hood gunman accused of killing 13 colleagues last month, may have been among 30 militant leaders killed when Yemeni aircraft bombed suspected al-Qaeda hideouts..."
Source of quote:
The article is obviously littered with spin, so read knowing what you're reading.
Here's what Anwar al-Awlaki had to say a few days before the airstrike...
I couldn't find a link to the interview on al-Jazeera's website.