A man asks for help after an explosion during a peace march in Ankara on Saturday. Photograph: Tumay Berkin/Reuters

Eighty-six people were killed in twin bomb blasts in the Turkish capital Ankara on Saturday, while another 186 people were wounded including 28 who a(...)

The leaders of Serbia, Bosnia and Croatia sign  the peace agreement on Bosnia in  December 1995 whilst world leaders look on. Photo: Getty.

Could Russia’s military intervention in Syria be the prelude to – or even enable – a regional peace deal similar to the 1995 Dayton Agreement, which b(...)

Chief of Staff Mark Mellett (left) warns over “enemies” of the State gaining advantage. Photograph: Alan Betson

Conor Lally Security and Crime Editor The Defence Forces needed to properly harness the “explosion” of data in modern society or risk making terroris(...)

Men on motorcycles inspect a site hit by what activists said were air strikes carried out by the Russian air force in the town of Babila, in the southern countryside of Idlib, Syria. Photograph: Khalil Ashawi/Reuters

The United States will largely abandon its failed efforts to train moderate Syrian rebels fighting Islamic State, and instead provide arms and equipme(...)

Kunduz Hospital: Two days before the second  attack, Russian aircraft bombed targets in Syria. The US claimed irresponsible targeting had resulted in civilians being killed.

Asked on Monday whether the US had decided to reject referral of the bombing of the hospital at Kunduz to the International Criminal Court (ICC), Stat(...)

A Russian warship in the Caspian Sea launches missiles on Wednesday. The Russian Defence Ministry the warships of the Caspian Flotilla carried out massive strikes against Islamic State facilities in Syria. Photograph: EPA/Russian Defence Ministry

Ground troops loyal to president Bashar al-Assad have launched a major offensive in central Syria backed by Russian air strikes. It is an escalation i(...)

A frame grab taken from footage released by Russia’s Defence Ministry on Monday, shows airstrikes carried out by the country’s air force in Syria. Photograph: Reuters 0:54

Nato’s secretary-general has rejected Moscow’s claim that its military incursion into alliance airspace over Turkey was not intentional or important, (...)

The Arch of Triumph among the Roman ruins of Palmyra which Islamic State extremists have blown up. Photograph: Getty Images 0:54

Nato has expressed “deep concern” about the Russian military build-up in Syria, warning Moscow to “immediately cease” its attacks on the Syrian opposi(...)

Syria’s president Bashar al-Assad: targeting of Syria shows Moscow gives priority to strengthening Damascus against near enemies rather than striking Islamic State. Photograph: Sana via Reuters

Russia’s deployment of war planes, missile systems, tanks, and armoured troop carriers has dramatically changed the shape of the conflict on the groun(...)

An Islamic State loyalist in the terror group’s de factor capital, Raqqa, in Syria, in June 2014. Photograph: Reuters

The US-led coalition fighting Islamic State has begun preparing to open a major front in northeastern Syria, aiming to put pressure on Raqqa, the terr(...)