Pakistan and the US are likely to conclude an agreement that will spell out areas of cooperation and their "respective limitations" in order to remove ambiguities in their fragile relationship, according to a media report today. 

The  understanding on the agreement was reached as part of a "package deal" that paved the way for Pakistan to reopen supply routes for US-led foreign forces in Afghanistan, The Express Tribune quoted unnamed officials as saying.  Talks on the proposed agreement will begin soon with an exchange of high-level visits, an official said.