Britain 'letting down' allies by not taking part in Syria airstrikes
Britain's top military commander has warned the UK is "letting down" its allies by not taking part in airstrikes against so-called Islamic State in Syria.
Chief of the Defence Staff, General Sir Nicholas Houghton, compared the situation to being asked to win a football match without going into the opponents' half.
Sir Nicholas told Sky News: "To an extent yes, we are letting our allies down by not being a full player."