Russia’s president Vladimir Putin with defence minister Sergei Shoigu. Photograph: Mikhail Klimentyev/EPA/Ria Novosti

Nato defence chiefs meet today as the alliance changes its strategic posture to counter a combative Russia, and amid fears that rising military activi(...)

A Ukrainian radical nationalist group Praviy Sektor (Right Sector) volunteer fighter fires his assault rifle during training near Pokrovskoe, eastern Ukraine, on Thursday. Photograph: Fabio Bucciarelli/AFP/Getty Images

The United Nations Security Council will convene and senior US officials will meet today to discuss resurgent fighting in eastern Ukraine, amid cla(...)

US deputy secretary of state Antony J Blinken gives a joint press conference following a meeting with foreign affairs members of the anti-Islamic State coalition in Paris on Tuesday. Photograph: AFP Photo/ Stephane De Sakutin

Despite ample evidence to the contrary, Washington continues to insist that the coalition fighting Islamic State is pursuing what US deputy secreta(...)

Online footage has shown the Chinese building, on the Fiery Cross Reef in the area, what looks like an airstrip and facilities, which the US navy calls the “Great Wall of Sand”. Photograph: United States Navy via the New York Times

China’s island-building efforts in the South China Sea have got its neighbours rattled and ratcheted up tensions in the region, but a top admiral said(...)

Chinese dredging vessels are purportedly seen in the waters around Mischief Reef in the disputed Spratly Islands in the South China Sea. Photograph: Reuters/US Navy

The United States said on Friday that China had placed mobile artillery weapons systems on a reclaimed island in the disputed South China Sea, a devel(...)

Displaced Sunni people fleeing the violence in Ramadi on the outskirts of Baghdad. Iraqi forces recaptured territory from advancing IS militants near the recently-fallen city of Ramadi on Sunday. Photograph: Reuters/Stringer

Rival powers and allies have traded barbs and accusations over the recent successes of Islamic State, a week after the militant group seized Ramadi (...)

US secretary of state John Kerry is welcomed by Russia’s president, Vladimir Putin, at the presidential residence of Bocharov Ruchey in Sochi. Photograph: Joshua Roberts/AP

Russia’s president, Vladimir Putin, welcomed US secretary of state John Kerry to the Black Sea resort of Sochi today, but its sunshine and spring flow(...)

Angela Merkel and Barack Obama: after meetings about  Ukraine and other topics at the White House. Photograph: Alex Wong/Getty Images

Barack Obama has thrown his support behind German diplomatic efforts to contain Russia in Ukraine, hinting that military alternatives under considerat(...)

 Ukraine president Petro Poroshenko, German chancellor Angela Merkel and US vice-president Joe Biden prior to a Friday meeting of  the Munich Security Conference. Photograph: Matthias Schrader/AP

German chancellor Angela Merkel will press US president Barack Obama today to postpone a decision on sending defensive arms to Ukraine pending a fresh(...)

Ukrainian President Petro Poroshenko (centre), German chancellor Angela Merkel and French President Francois Hollande during their talks in Kiev yesterday. Mykola Lazarenko/AFP/Getty Images

Russia has warned the United States that arming Ukraine in its fight with Moscow-backed separatists would do “colossal damage” to already fractious re(...)