US Afghan commander visits Pakistan

While relations between the United States and Pakistan are on the upswing with the re-opening of the supply routes into Pakistan — which had been shuttered for seven months — significant strains remain between the two countries.

Pakistan is still angry with the continued U.S. drone strikes in the Federally Administered Tribal Areas (FATA), and both sides blame the other for lax border security that allows militants to cross the border and launch attacks.

U.S. officials are also angry with the jailing of a Pakistani doctor who helped the CIA track down Osama bin Laden.

The relationship was at its lowest point after NATO troops killed 24 Pakistani soldiers on the Afghan-Pakistan border last November, which prompted Pakistan to shut down the supply route into Afghanistan.

Pakistan re-opened the supply routes after the United States apologized for the attack. The Obama administration inked a deal with Pakistan on Tuesday to keep the supply routes open through 2015.