Muallem accuses US of 'terrorist aggression'

Today, Syrian Foreign Minister Walid Muallem accused the US of committing 'terrorist aggression’ when addressing the British media in London on this weekend's raid conducted by US forces in the Syrian border area of Abu Kamal. According to a US official, the raid successfully targeted the head of a network that was financing and smuggling foreign fighters into Iraq.

Is this incident proof that that Syria is not doing enough in cooperating on the terrorism front? Will it impact US-Syrian relations on ongiong issues such as Lebanon and curbing the flow of foreign fighters to Iraq via the Syrian border?