Helicopter drones which could shoot down Islamic State's new remote-controlled weapons are under development, the Defence Secretary announced yesterday. Sir Michael Fallon said the terror group's latest drone tactics in Iraq – in which they drop grenades from the skies – had been a'wake-up call' for Britain. Unmanned craft would enable the UK to stay ahead of enemies as they would be faster, fly for longer, and spare pilots from any risk, he said. In a speech at Oxford University to engineers and academics, he said drone wars were the future, adding: 'Science fiction will soon be science fact. Unmanned warfare is coming absolutely.'