Nato leaders will discuss Ukraine and the rise of the Islamic State – but what will the summit achieve?
Tories and Lib Dems had been at odds on on new powers to seize passports of returning jihadist fighters
Set-back for US weapon which would be able to hit a target anywhere in the world within one hour
White House said those responsible were 'real patriots', as human rights groups call for 'legal consequences'
Experts say Malaysia Airlines flight MH17 is likely to have been downed by a Buk missile launcher. But who fired it?
UK's £185m unmanned Taranis drone completes 'full stealth' flight above the Australian desert
Intelligence committee chief Malcolm Rifkind warns of terrorists with ‘devilish technical skill’
By using social media, self-proclaimed Caliph Ibrahim insures the flow of recruits from Britain and Europe
Pressure builds on Barack Obama as more rumours swirl about the motives of Bowe Bergdahl
US soldiers' brains could be hooked up via the internet so they can act on orders without thinking
'War on terror' changes gear: Obama is due to explain his new foreign policy at West Point today
Introduction of brutal Sharia law means it’s time to get out - even if Sultan is buddies with Prince Charles
Some analysts argue that the best way out of the crisis would be to split Ukraine between east and west
Israeli government plans to enlist 5,200 ultra-orthodox Jews – previously exempt from the draft – by mid-2017
Britain can no longer be a full military partner of the United States, says former US defence secretary
Former US defence secretary uses new memoirs to criticise president's handling of the Afghan war
The Prime Minister hand-picked Nick Houghton as a malleable defence chief - how wrong he was
Armed Forces on course to have ‘exquisite technology' but insufficient resources to man it
Brave talk cannot hide the risk of Afghanistan being a hub for resurgent al-Qaeda groups
Beijing allows US and Japanese aircraft into its expanded air space, but says it's 'monitoring' them