Trump's comments last month sparked fears of a new nuclear arms race and concerns major powers would restart full testing.

I don't see Trump being afraid of Russia using nuclear weapons,” Ukrainian historian Serhii Plokhy told Newsweek.

Lieutenant General Alexander Sollfrank said Russia could now launch a limited incursion against Nato territory ...

Russian Foreign Minister Sergei Lavrov said on Saturday that work is under way on President Vladimir Putin's order to prepare ...

Sergei Lavrov has been sidelined by Vladimir Putin after his failure to organise a summit with Donald Trump in Budapest, ...

The Kremlin on Friday dismissed speculation that Russian Foreign Minister Sergei Lavrov had fallen out of favour with ...

The attack in Dnipro, Ukraine’s fourth-largest city, was part of a large Russian missile and drone barrage across the country ...

Russian President Vladimir Putin has vowed to bring back the Russian empire; indeed, he has staked his political fortunes on ...

Ukraine is increasingly striking at energy and arms targets in Russia.

Russian President Vladimir Putin has ordered officials to submit proposals for a possible resumption of nuclear tests in ...

Russian President Vladimir Putin says the country will explore the possibility of carrying out fresh nuclear tests after US ...

In a televised meeting with his Security Council in Moscow on Wednesday, the Russian leader responded to the announcement ...