By Suzannah Hills PUBLISHED: 04:23 EST, 25 August 2013 | UPDATED: 05:13 EST, 26 August 2013 Syria has agreed to allow UN inspectors access to sites in suburbs of Damascus where alleged chemical attacks occurred on Wednesday. The concession follows accusations that Bashar Assad's regime is responsible for a chemical attack which killed more than 350 people - many of them children - on Wednesday. Syria has denied that it is to blame while many Western officials claim the poisoning was caused by a chemical agent used in a rocket attack carried out by government forces. Scroll down for video
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Barack Obama has pledged a 'serious response' if Bashar Assad regime is proved to have used chemical weapons
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Aid organisations claimed this week that more than 350 people - many of them children - died due to the effects of neurotoxins
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Medicins Sans Frontieres says victims were exposed to 'neurotoxic agent'
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Assad regime denies reports as 'absolutely baseless'
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Iran warned U.S. of 'severe consequences' if 'red line' on Syria is crossed
Four battleships have been moved to within striking range of @placeholder as President Obama weighs his options following a reported use of chemical weapons against citizens on Wednesday