President Donald Trump seems to have learned the lesson painfully gleaned by all his 21st-century predecessors: You can’t reset US relations with Vladimir Putin.

Trump's threat against Russia runs parallel to a Senate-led effort to pass crippling sanctions on countries that buy Russian energy.

Donald Trump has grown increasingly frustrated with his Russian counterpart over the Kremlin's unwillingness to engage in peace negotiations on Ukraine.

Donald Trump has again warned Russia that it will face "secondary tariffs" and other sanctions if it does not agree to a ceasefire in Ukraine, but claimed he is "not on anybody's side" in the conflict

But his frustration with Putin has grown. Last week, the president said the United States was taking “a lot of bullshit” from Putin. Today, he authorized a significant shipment of U.S. defensive weapons to Ukraine via NATO and threatened Russia with new tariffs if the war does not end in 50 days.

When Donald Trump arrived at the White House for the first time nine years ago, he vowed to tear up the rule book, upend the world order and fundamentally change America's approach to its foreign relations.

Vladimir Putin has "played Donald Trump like a violin" - but may have now pushed things too far, the former head of MI6 has warned.

Having falsely labelled Ukraine’s President, Volodymyr Zelensky, a “dictator”, wrongly claimed he was responsible for the three-year war, and appearing to have more sympathy with Vladimir Putin, Trump has effectively made a 180-degree turn.