US Secretary of State Mike Pompeo says when the US will sign a deal with Taliban, CNN reported. 

According to him, the US will sign a deal with the Taliban "if and only if" the week-long reduction in violence is successful.

As Pompeo noted, "so far, the reduction in violence is working." "It isn't perfect, but it's working," he said. "It's got to work for a long time while this political resolution is driven forward."

The deal is expected to be signed in Doha on February 29.

A partial truce had been preserved from Saturday, while the number of Taliban attacks has fallen sharply. A military victory was unlikely for the US in Afghanistan, he added.

There are currently about 12,000 US troops in Afghanistan. Pentagon head Mark Esper previously said if the seven-day truce is successful, the US will reduce its troops to about 8,600 people.