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.

Moscow has been urged to use the Oreshnik hypersonic missile, which is said to be impossible to stop due to its speed

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:

President Vladimir Putin believes Russia's economy and its military are strong enough to weather any additional Western measures, sources said.

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

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.

New developments Tuesday reinforced the idea that President Donald Trump has significantly shifted his view of the Ukraine war.

Donald Trump has remarked that it will be 'too bad' if Vladimir Putin refuses to agree to a ceasefire in Ukraine. Speaking to the press on the White House South Lawn on Tuesday, following his threat of imposing "secondary tariffs" of up to 100% on Moscow if they don't strike a deal within the next 50 days,

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.