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What does President Obama's visit mean for Japan?

23 April 2014 Last updated at 15:52 BST

US President Obama has arrived in Japan on the first leg of his tour of Asia.

But what will Japan be hoping for from the visit - and what will the US be looking for?

Professor Kiichi Fujiwara from Tokyo University told the BBC's Rupert Wingfield-Hayes that Japan's military alliance with the US is an important issue.

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