Talking to a private TV channel, the minister said politicians never closed the negotiating doors.
He said that dialogue process was going forward positively with PTI, PAT leaders.
The minister said that protesters had violated their promises again and again, adding that people of sit-ins had crossed the Red-Zone.
Khawaja Asif stressed that government would not give the permission to protesters to enter the national buildings and government try to its best to use minimum power for controlling the agitators.