Ukraine agrees multi-tier plan for enforcing any ceasefire with Russia

Ukraine has agreed with western partners that persistent Russian violations of any future ceasefire agreement would be met by a co-ordinated military response from Europe and the US, according to people briefed on the discussions.

Russia is ready for new world with no nuclear limits, senior diplomat says

Russia is ready for the new reality of a world with no U.-Russian nuclear arms control limits after the New START treaty expires this week, ​Moscow's point man for arms control said on Tuesday.

Russia resumes night strikes on major Ukrainian cities as brief pause agreed between Putin and Trump ends

Russia attacked Ukraine’s capital Kyiv with ballistic missiles early on Tuesday, local authorities reported, following a week-long pause in strikes on major cities and infrastructure agreed to by Russia and the US as Ukraine grapples with plummeting winter temperatures.

'Enemy' insults and questioning Putin: Steve Rosenberg on tightrope of reporting from Russia

The BBC's Russia editor reflects on the difficulties of working as a British journalist in Moscow.

Barack Obama Sends Warning About Nuclear Arms Race With Russia

The former U.S. president has warned that the expiration of the New START treaty would "wipe out decades of diplomacy."

Venezuelan oil is key to Trump’s Russia plan. There’s a problem with that

President Donald Trump made a bargain with India this week that introduced a simple calculus.

Russian athletes to compete at the Milan Cortina Games, but not for Russia

For the second consecutive Olympic Games, no athletes will compete under the Russian flag

Report warns that combined casualties in Russia's war on Ukraine could hit 2 million

A new report warns that the number of soldiers killed, injured or missing in Russia's war in Ukraine could reach 2 million by spring