Ministers say it could take two years to destroy Isis

Military intervention will need to be supported by a diplomatic agreement for a new Syrian transitional government, say government sources
Cabinet ministers have warned in the aftermath of the first RAF Tornado bombing raids in Syria that it may take as long as two years to destroy Islamic State, saying it will require patience and persistence.
A military breakthrough may first require diplomatic agreement on the formation of a new transitional government capable of uniting warring forces to dri