In January 2016 the Taliban in Qatar participated in a Doha Dialogue entitled "Peace and Security in Afghanistan" organized by the Nobel Peace Prize winning Pugwash Conferences on Sciences and World Affairs. The conference took place outside of the stalled reconciliation and peace talks between the U.S., Afghanistan, China, Pakistan, and the Taliban, which were the original rationale behind Taliban offices in Qatar.[41] While the conference was attended by key leaders from the Taliban offices in Qatar, according to some sources Afghanistan's embassy and government boycotted the event,[42][dubious ] while other sources argue that the Taliban refused to negotiate with them and hence were excluded.[43] In the conference, members of the Taliban listed many conditions for starting the peace process in Afghanistan.[41][42] Listed in their demands were: the release of an unspecified number of Taliban prisoners and the removal of senior members from the United Nations blacklist.[44]