US President Barack Obama appears to be frustrated with Pakistan, which is reflected in his address to the nation from Afghanistan, an eminent American expert on South Asian issues said today. 

"The President's frustration with Pakistan and its lack of cooperation in Afghanistan came through in his remarks.  He said Pakistan should be part of the process to stabilise Afghanistan," said Lisa Curtis of The Heritage Foundation. 

She was commenting after the US President delivered his remarks from Bagram Air Base in Afghanistan marking the first death anniversary of al-Qaeda leader Osama bin Laden. 

"I have made it clear to Afghanistan's neighbour -- Pakistan -- that it can and should be an equal partner in this process in a way that respects Pakistan's sovereignty, interests and democratic institutions.

In pursuit of a durable peace, America has no designs beyond an end to al-Qaeda safe-havens, and respect for Afghan sovereignty," Obama said.