By Jill Reilly PUBLISHED: 05:06 EST, 17 May 2013 | UPDATED: 11:19 EST, 17 May 2013 President Barack Obama has revealed the US has seen evidence of chemical weapons being used in Syria. His announcement comes as Russia sends in advanced missiles to Syria in a move that highlights the depth of its support for President Bashar al-Assad. Following a meeting with Turkish PM Recep Tayyip Erdogan, Mr Obama insisted it was important to get more specific details about alleged chemical attacks. Declaration: President Barack Obama has said the US has seen evidence of chemical weapons being used in Syria. Following a meeting with Turkish PM Recep Tayyip Erdogan, Mr Obama insisted it was important to get more specific details
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US President has previously said chemical use would be crossing 'red line'
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Obama insisted it was important to get more information about allegations
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Russia has sent advanced antiship cruise missiles to Syria
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Russia's Pacific Fleet enters Mediterranean waters for the first time in decades in a period of high tension over the Syrian conflict
'We both agree that Bashar as-Assad needs to go,' Obama said, referring to @placeholder standing beside him.