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. This plea comes on the heels of US President Donald Trump's 50-day ultimatum for Russia to cease its aggression towards Ukraine or face 'very severe' sanctions.

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:

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

The European Union approved on Friday a new raft of sanctions against Russia over its war on Ukraine, including a lower oil price cap, a ban on transactions with Nord Stream gas pipelines, and the targeting of more shadow fleet ships,

The West is waging a full-scale war against Russia, and Moscow should respond in full, former Russian president Dmitry Medvedev has said.Mr Medvedev, now deputy chairman of Russia's Security Council,

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,