US President Donald Trump’s 50-day pause ahead of possible secondary sanctions on Russia gifts the Kremlin a window to exploit the incremental gains of recent weeks in Ukraine’s east.

President Donald Trump announced this week that the U.S. will send Patriot air-defense missiles to Ukraine and threatened new tariffs on Russia. Will Vladimir Putin back down? What should Trump's next move be? And what does the future hold for Ukraine? Newsweek contributors Daniel R. DePetris and Dan Perry debate:

The first tranche of a fleet of Aussie tanks, worth some $245m, have been delivered to Ukraine to help bolster the war-torn nation in its war against Russia.

Armenia has signalled it could quit the Collective Security Treaty Organization (CSTO), a security bloc seen as Moscow's version of NATO, after a peace treaty with Azerbaijan

The Kremlin said on Friday that it did not believe that a tougher stance U.S. President Donald Trump has adopted towards Russia over its war in Ukraine means the end of U.S-Russia talks aimed at reviving their battered ties.

A Russian military captain has urged Vladimir Putin to deploy the nation's nuclear-capable hypersonic missile against Europe, a move that could potentially ignite World War III.

Dozens of Russian spies who targeted Sergei Skripal’s daughter and mounted a series of attacks on Britain have been exposed by Britain’s security services.