Obama Visits Chile Amid Nuclear Debate

A few weeks ago, Barack Obama's trip to Chile promised to be little more than a formality - a chance for a courtesy meeting with the Chilean President Sebastian Pinera and a photo opportunity involving the US First Lady and the Obama daughters.

But events in Libya and at Japan's Fukushima nuclear plant have turned the trip on its head.

President Obama is visiting Santiago following a weekend of coalition air strikes against Libya and just three days after the US and Chile signed a nuclear co-operation pact.