President Trump’s 50-day Ukraine ultimatum to Russia is likely to fail because Vladimir Putin believes he can withstand any new sanctions and is not negotiating in good faith. -Even as Russia’s economy teeters on the brink of recession,

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.

Switzerland made a historic decision that shook the world — it ended its 207-year-old policy of neutrality. For over two centuries, Switzerland maintained a position of neutrality in global conflicts,

Concerns are growing that Kazakhstan could be at risk of a future Russian invasion, amid claims of the Kremlin's growing influence and signs of a cultural crackdown.

Russian ground advances across eastern Ukraine appear to be small at first glance — only 1.2 square kilometers on an average per day near the city of Kupiansk. Or, as the Institute for the Study of War notes,

Sitting in the Oval Office with NATO Secretary-General Mark Rutte, and apparently fed up with being slow-walked by Russian President Vladimir Putin, Trump threatened the Kremlin with tough tariffs if it doesn't make a deal to end the war within 50 days. But perhaps more important was Trump's shift on weapons.

President Trump’s recent commitment to provide more aid to Ukraine could increase pressure on Russia to negotiate an end to the war.

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: