WASHINGTON: Trilateral talks between the United States, Afghanistan and Pakistan due later this month have been postponed, the State Department said Saturday, in the latest sign of strained US ties with Islamabad.

"In light of the political changes in Pakistan and after discussions with Afghan and Pakistani officials in Washington, it was agreed to postpone the Trilateral Meeting scheduled for February 23-24," State Department spokesman Philip Crowley said in a statement.

"We look forward to convening a very productive Trilateral Meeting at the earliest opportunity," he said, adding that Washington remains "committed to robust engagement between Afghanistan, Pakistan and the United States."