Under the umbrella of a withdrawing/reducing ME presence after nearly 25 years of Western operations in the region, this has been a well-timed incursion by ISIS. Relatively un-opposed thus far, I personally agree that swift and overwhelming action is required to stem the influence but this has all the hallmarks of drawing us into another Afghanistan-style conflict with no fixed end. The outcome would still be a self-governing, strong, democratic Iraq but I remain sceptical it can be achieved - it certainly won't be done through sole use of air strikes as others here have said.
This is already a mess. It can only get worse without Western intervention.
The problem the British military are cut to such a small scale these days that one has to ask "who can we send?!" The Times article today says our Tory MPs are crying to send UK jets.