US President Obama meets China's Xi Jinping

US President Obama has emphasised the importance of a strong relationship between Washington and Beijing as he met the man expected to be China's next leader.

Xi JinPing, China's current vice-president, is in the US on a week-long trip as the guest of US Vice-President Joe Biden, who made a high-profile visit to China late last year.

Ties between the two countries have been strained over trade, currency, and human rights, but Mr Xi said he hoped his visit would deepen mutual understanding.

Steve Kingstone reports from Washington.