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(...)

Nato secretary general Jens Stoltenberg at  a press conference  in Brussels on Tuesday. “I will not speculate on the motives but this does not look like an accident,” he said. Photograph: Laurent Dubrule/EPA

Nato general secretary Jens Stoltenberg rejected claims by Russia that its incursion into Turkish airspace last weekend was accidental, amid claims t(...)

 General John Campbell testifies before the Senate armed services committee in Washington, DC. The commander said the MSF hospital was “mistakenly struck” by US forces. Photograph: Jim Watson/AFP/Getty Images

US special forces, rather than their Afghan allies, called in the deadly air strike on the Médecins Sans Frontières (MSF) hospital in Kunduz, the U(...)

Tanks of the Ukrainian armed forces make a crossing during a withdrawal near the village of Nyzhnje in Luhansk region this week. Photograph:  Reuters

The European Union and Russia welcomed a decision by Moscow-backed separatists in eastern Ukraine to postpone local elections, which they had vowed(...)

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(...)

Footage released by Russia’s defence ministry shows airstrikes carried out by the country’s air force in Syria. Photograph: Reuters

Nato ambassadors told Russia to halt its incursions into the airspace of Turkey, a member of the alliance, saying the violations were both extremely d(...)

Syrian president Bashar al-Assad was speaking a day after Moscow said it would step up air strikes against Islamic State targets across Syria. Photograph: AFP/HO/Syrian presidency 1:17

President Bashar al-Assad said the success of a military campaign by Russia, Syria and its allies was vital to save the Middle East from destruction, (...)

A frame grab taken from footage released by Russia’s Defence Ministry on Saturday. Photograph: Reuters

Russian jets hit Islamic State targets and other rebel groups in Syria on Saturday, on a fourth day of air strikes by Moscow in support of president (...)