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Obama turns tourist in Petra

US President Barack Obama took time out of his diplomatic trip of the Middle East to marvel at the ancient city of Petra. His 24-hour visit to Jordan marked the end of his four-day visit to the region.

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Obama: Assad will be responsible for chemical weapons

Obama has warned of 'consequences' if chemical weapons are used in Syria. Credit: Kevin Lamarque / Reuters

US President Barack Obama has said the Syrian President Bashar al-Assad would be held accountable if chemical weapons had been used in his country.

Obama, on a visit to Israel, said the US was still investigating whether the weapons had been used.

Speaking at a joint news conference in Jerusalem with Israeli Prime Minister Benjamin Netanyahu, he said: "We have been clear that the use of chemical weapons against the Syrian people would be a serious and tragic mistake.

"The Assad regime must understand that they will be held accountable for the use of chemical weapons or their transfer to terrorists."

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