In Yemen, there is no doubt that the government has a huge terrorism problem.
Recent political instability has weakened the Yemeni government's hold on its territory.
The local al-Qaeda affiliate has taken advantage of that grabbing control of much of southern Yemen.
The US government has stepped up its drone strikes there, but southern Yemen remain an al-Qaeda stronghold.
After months of negotiations with the militants, reporter Ghaith Abdul-Ahad, and director Safa Alahmad of our partner Frontline were able to enter the al-Qaeda region. The documentary "Al-Qaeda in Yemen" airs on PBS tonight.
Anchor Marco Werman talks to Alahmad who says it was unnerving to be under the constant watch of al-Qaeda handlers.