President Donald Trump is downplaying the possibility of sending Ukraine long-range weapons as Kyiv awaits an injection of U.S. weaponry that it hopes will help it beat back an intensifying Russian air offensive.

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.

Shares of energy companies fell alongside oil futures as President Trump gave Russia 50 days to comply with demands for a cease-fire. Trump said he would impose tariffs of up to 100% on Russia if the Kremlin doesn't agree to halt hostilities in Ukraine during that time frame.

President Donald Trump’s ultimatum to Russia to accept a peace deal in Ukraine within 50 days or face bruising sanctions on its energy exports has given the Kremlin extra time to pursue its summer offensive.

Russia launched four missiles and 136 drones into Ukraine overnight into Monday morning, according to Ukraine's air force.