Pakistan's interior minister says the death of Pakistani Taliban leader Hakimullah Mehsud has destroyed the country's nascent peace process. Other leading political figures in Pakistan have also condemned the strike, which they say will push back attempts at peace.
Yesterday, the Pakistani Taliban confirmed the death of their leader in a United States drone as the group's leadership council met to begin the process of choosing a successor.
The death of Mehsud, a ruthless leader known for attacking a CIA base in Afghanistan and a bloody campaign that killed thousands of Pakistani civilians and members of the security forces, is a heavy blow for the militant group.
However, the drone strike came as the Pakistan government tried to negotiate a peace agreement with the Tehreek-e-Taliban, the formal name for Mehsud's militant group.
Already the strike threatened to worsen US-Pakistan relations as the Pakistani government's information minister criticised the US for jeopardising the peace talks. A prominent political leader also threatened to block trucks carrying supplies to NATO troops in neighbouring Afghanistan.
"What we can say is this time the drone (strike) was on the dialogue, but we will not let the dialogue die," Information Minister Pervaiz Rashid said.
The Pakistani Taliban is an umbrella group of different militant factions that has battled the government since its formation in 2007.
The group seeks to topple Pakistan's democratic system and impose Islamic law, and also wants an end to the country's unpopular alliance with the US.