The latest declaration from North Korea has brought rewards from Washington but experts say bigger challenges lie ahead.

CFR's Gary Samore says North Korea's declaration on its nuclear activities and lifting of sanctions by the United States marks "a useful initial step" but more work needs to be done to ensure disarmament.

Saeed Shah writes about A.Q. Khan's first interview with an American news organization. The Pakistani nuclear scientist denied that he’d done anything but offer "very small advice" to Iran and Libya on where to acquire nuclear technology.

Nathan Robb, a political analyst at the Consulate General of Japan in New York, writes about the discussions between South Korean, Japanese, and American envoys on North Korean nuclear affairs. Japan has reservations about negotiating with the North Koreans when they have not acknowledged the abduction of dozens of Japanese civilians from 1979 to 1983.

Newsweek's Morton Abramowitz and Stephen Bosworth say despite its achievements, Washington is divided on how to deal with North Korea long term.

Leslie H. Gelb argues that real issue is not whether to talk to "bad guys" but how.

Watering down previous deals will reinforce Pyongyang’s instinct for bluster and blackmail, argue Winston Lord and Leslie H. Gelb.

Washington’s latest revisions to its stance on North Korea nuclear-disarmament talks, experts say, threatens to undermine counter-proliferation efforts.

Gary Samore, a senior arms-control negotiator in the Clinton administration, says the Bush administration has agreed to a compromise with North Korea on demands for it to confess the extent of its uranium-enrichment activities.

A conservative parliament may provide further impetus to South Korean president to maintain a harder line on Pyongyang.

Andrew Scobell seeks to assist planners and decisionmakers in thinking about and preparing for possible future contingencies concerning North Korea. The collapse of the Kim regime may not lead to the collapse of North Korea as a state and even if regime collapse is followed by state collapse, these events may not lead to Korean unification.

Why North Korea will not change.

A North Korea expert says the New York Philharmonic’s concert in Pyongyang will encourage North Koreans to become less isolated.

The U.S. envoy on North Korea’s denuclearization process says he expects difficult talks ahead on getting Pyongyang’s full declaration on its uranium enrichment.

Max Boot looks at which presidential candidate “an Ahmadinejad, Assad or Kim would fear the most.”