Pakistan has put ties with the United States on hold following last year's deadly U.S.-led NATO airstrikes that killed two dozen Pakistani soldiers, Foreign Minister Hina Rabbani Khar says. 

"Now that the re-evaluation process is under way as we speak, so till the time that re-evaluation process is not complete, we cannot start the re-engagement," Hina Rabbani Khar said in an interview with Reuters on Thursday.

"I would say they (relations) are conveniently on hold until we start re-engaging," she added. 

The November 26 airstrikes, which killed 24 Pakistani soldiers at two checkpoints on the Afghan border, plunged relations between Washington and Islamabad to their chilliest levels in years.

In response to the airstrikes, Islamabad ordered the U.S. to vacate a key airbase in Balochistan province and stopped NATO supply convoys destined for the 130,000-strong U.S.-led force occupying Afghanistan. 

Ties between Washington and Islamabad were also severely hurt a year ago by the killing of two Pakistanis by a CIA contractor.

Khar stated that Pakistan could announce the terms for relations with the U.S. within days. 

"We are trying to push for it as we speak," she said, adding, "I know that they have completed their recommendations and we will look for an appropriate day to hold the joint session of parliament. The recommendations could come out in days." 

The U.S. needs Pakistan's support to end the war in neighboring Afghanistan, which has become the longest war in U.S. history, but Islamabad is under increasing pressure from its people to end cooperation with Washington. 

Pakistani officials alleged that the U.S. targeted their troops at border posts intentionally, saying that they have proved with relevant pictures and maps that the foreign forces deliberately carried out the deadly airstrikes.