These include expanding the current arrangement that enables NATO to ship non-lethal supplies from Europe to Afghanistan overland through Russia. The official said Monday it would now allow for heavy equipment to be transported.

The official asked not to be identified under standing rules.

NATO and Russia are to finish the agreement at a NATO summit in Portugal. Both President Barack Obama and Russian President Dmitry Medvedev will attend Friday and Saturday.

The US official says other accords will cover a new counter-narcotics center to be set up in Russia to train agents from Afghanistan and other Central Asian nations.