Condoleezza Rice calls for Pakistan's 'cooperation.' She will visit India Wednesday.
Perceived as ineffective and corrupt, the Afghan president faces an uphill battle to reelection.
One seeks domestic security, the other stability for Afghans.
Militants are targeted by drones to keep them from entering Afghanistan.
Wednesday, a US airstrike killed 11 Pakistani soldiers near the Afghan border.
The Awami National Party, which leads the ruling coalition in the crucial North West Frontier Province, espouses a nonviolent approach to tackling extremism.
The latest, at a naval college in Lahore Tuesday, was the fourth in five days.
Militants in the country's tribal belt seem to be maneuvering for time and space, analysts say.