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US 'missing' some Syria facts

Barack Obama says the United States doesn't know how or when chemical weapons were used in Syria or who used them. The US President said he had to make sure he had the facts before deciding how to respond to evidence that chemical weapons were used.

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Obama stresses concerns over Syria with Putin

Barack Obama has emphasised US concerns about Syrian chemical weapons in a phone conversation with Russian President Vladimir Putin today, the White House said.

"President Obama and President Putin reviewed the situation in Syria, with President Obama underscoring concern over Syrian chemical weapons," a White House statement said.

The two leaders agreed to stay in touch on the issue and that Secretary of State John Kerry and Russian Foreign Minister Sergei Lavrov would continue discussions on Syria.

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