United States has not granted permission for Pakistan to operate direct flights to American destinations due to security concerns.Pakistan cannot start direct flights to the United States because the US has reservations about the security arrangements at Pakistani airports, Parliamentary Secretary Syed Tanveer Hussain told the National Assembly on Friday.Although Pakistan has made elaborate security arrangements at all airports, US authorities are "not satisfied" with them, he added.US promised to help Pakistan enhance security at all its airports, and provided some equipment in this regard.
