The first two rounds of the trilateral talks were held in Kabul and New York last year.

BBC: Afghanistan and Pakistan aim for 'peace in six months'

That figure will soon change: After laying dormant since 1965, regional trade talks were revived again at the trilateral meeting, where--egged on by the State Department--Presidents Zardari and Karzai negotiated a memorandum of understanding and a timeline.

FORBES: Ambassador To Pakistan's Economy

"This trilateral meeting reaffirmed the steps that North Korea should take in order for six-party talks to produce results, " Mrs Clinton said at a joint news conference after the Washington talks.

BBC: US renews demand on North Korea to change behaviour