Following a three-day visit to Pakistan, Ben Emmerson QC, the U.N.'s special rapporteur on counter-terrorism and human rights, warned that continuing U.S. drone strikes are a violation of  that country’s sovereignty. According to the Guardian, Emmerson said,

"The position of the government of Pakistan is quite clear. It does not consent to the use of drones by the United States on its territory and it considers this to be a violation of Pakistan's sovereignty and territorial integrity.

"As a matter of international law the US drone campaign in Pakistan is therefore being conducted without the consent of the elected representatives of the people, or the legitimate government of the state. It involves the use of force on the territory of another state without its consent and is therefore a violation of Pakistan's sovereignty.

"Pakistan has also been quite clear that it considers the drone campaign to be counter-productive and to be radicalizing a whole new generation, and thereby perpetuating the problem of terrorism in the region.”