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Japan's relationship with the US

2 December 2013 Last updated at 23:53 GMT

US Vice-President Joe Biden has arrived in Tokyo to meet Japanese leaders at the start of a week-long trip to Asia.

The visit comes at a tense time in the region over China's newly-declared air defence identification zone.

Both Japan and the US are contesting the expansion of Chinese airspace, which includes a group of disputed islands.

Rupert Wingfield-Hayes reports from Tokyo on Japan's foreign policy and the relationship with the US.