PK is probably conveying to the US and NATO that they will not help them to attack Iran, like they did in WOT.
Oh, they will, trust me. There are groups in Pakistan dreaming of the when US attacks Iran(both secular and religious groups).
The secular groups for reasons like "Israel-Iran conflict would leave Pakistan the only MUSLIM POWA IN THE WORLD, not mention the Bomb." There by they ll be back in international stage once again as a legitimate player.