(CNN) -- North Korea's apparent cooperation with nations seeking to end its nuclear weapons ambitions -- six years after a deal collapsed and two years after testing a bomb -- may lead to questions about why it would play ball now. Some signs show North Korean leader Kim Jong Il does intend to drop his nuclear weapon program, experts say. One school of thought: The communist nation, in desperate economic straits, has long been willing to drop its program for better relations with the United States. But mistakes on both sides interfered, according to Jim Walsh, a national security analyst.
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North Korea's negotiations driven by economic need, desire for survival, experts say
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China, embarrassed by nuclear test, has prodded North Korea, expert says
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Deceit possible, experts say, but nation's best interest is to be on West's good side
Walsh said the West doesn't have hard evidence to determine @placeholder's intentions.