Britain's top military officer says the UK is letting its allies down by not carrying out air strikes in Syria.
The UK's military action against the Islamic State is currently limited to Iraq.
General Sir Nicholas Houghton says this strategy doesn't make sense while Islamic State militants have their de facto capital in Syria.
British MPs voted against military action in Syria in 2013.
But as Olly Barratt reports from London, top British officials are pushing for this to be reexamined.
IN: "These comments...
OUT: ... over Iraq."
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