China says it monitored defiant B-52 flights

China acknowledged Wednesday it let two American B-52 bombers fly unhindered through its newly declared air defense zone in the East China Sea despite its earlier threat to take defensive measures against unidentified foreign aircraft. The U.S. flights, which tested the Chinese zone for the first time since it was declared over the weekend, raised questions about Beijing's determination to enforce its requirement that foreign aircraft identify themselves and accept Chinese instructions.

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