This file photo shows US special envoy Marc Grossman (R) speaking during a joint press conference with Afghan deputy FM Jawed Ludin (L) and Pakistani foreign secretary Jalil Abbas Jilani (C), in ... more 

This file photo shows US special envoy Marc Grossman (R) speaking during a joint press conference with Afghan deputy FM Jawed Ludin (L) and Pakistani foreign secretary Jalil Abbas Jilani (C), in Islamabad, on April 27. A day earlier, Islamabad reiterated its opposition to US drone attacks in its territory less