The US president says he is "disappointed" in Putin and will be sending "top-of-the-line" weapons to Ukraine, via Nato.

Trump and Rutte unveiled a deal under which the NATO military alliance would buy billions of dollars of arms from the United States -- including Patriot anti-missile batteries -- and then send them to Ukraine.

President Trump threatened to punish Russia with heavy tariffs on countries that trade with Moscow if the Kremlin fails to reach a ceasefire deal with Ukraine, while promising Kyiv weapons.