RUSI: 'Take on IS at Syria power base'
MPs should consider allowing Britain to bomb Islamic State targets in Syria, the defence secretary is to say.
The RAF has been carrying out strikes in Iraq since September but Michael Fallon will say parliament should look at the case for missions in Syria too.
Professor Michael Clarke, director general of the Royal United Services Institute, said that "sooner or later someone has got to take IS on [in Syria] at the centre of their power."