Will China 'bite' North Korea?

profLind.

(CNN) -- North Korea, China's longtime ally, has vexed Beijing for years with its rocket launches, nuclear tests, kidnapping of Chinese fishermen and other erratic behavior. Yet, Beijing has run interference at the United Nations to temper punishments against Pyongyang, and has even helped Pyongyang circumvent sanctions.

In the wake of North Korea's third nuclear test in February, its reckless threats to strike the United States, and now -- its decision to scrap the armistice that ended the Korean War -- has China finally had enough?

Beijing signed on to sanctions that, in the words of Susan Rice, U.S. ambassador to the United Nations, will "bite and bite hard." China's ambassador to the U.N. declared Beijing's commitment to "safeguarding peace and stability on the Korean peninsula."

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