The US president, Donald Trump, recently announced that Russia had 50 days to end its war in Ukraine. Otherwise it would face comprehensive secondary sanctions targeting countries that continued trading with Moscow.

One of Vladimir Putin's mouthpieces has warned Donald Trump that he is pushing Russia towards nuclear war. After pledging to deliver more weapons to Ukraine - including the prized Patriot air defence systems - the US president rattled the Kremlin further and threatened to unleash additional sanctions if Putin refuses to negotiate a ceasefire deal in 50 days.

The President had a decade-long bromance with his Russian counterpart and is thankfully changing tack, writes Michael McFaul.

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Sitting next to the Nato chief Mark Rutte in the Oval Office, Trump expressed frustration with Vladimir Putin and unveiled a weapons plan that would see European countries buy US arms and transfer them to Ukraine.