Senior Russian officials have shrugged off yesterday's ultimatum by US President Donald Trump that the United States will impose tariffs on Russia and its trading partners if Moscow fails to halt its war in Ukraine within 50 days.

“I felt we had a deal about four times″ between Russia and Ukraine, "but it just kept going on and on”, said Trump.

Ukrainian President Volodymyr Zelenskyy thanked US President Donald Trump for his “willingness to support” Kyiv and help “stop the killings” hours after the US leader vowed to provide a major influx of new weapons to Ukraine and threatened Russia with “severe” new financial measures.

The US president made the announcement during an Oval Office meeting with NATO Secretary General Mark Rutte.

The US president warned of sweeping sanctions unless Russia agrees to a peace deal

Russia’s Foreign Minister Sergey Lavrov responded to Trump's tariff warning, saying Moscow would cope with new sanctions. Russia also rejected the 50-day ultimatum, calling it 'unacceptable'.

Former national security adviser John Bolton said Monday that President Trump could soon retreat from efforts to resolve Russia’s war with Ukraine. The Trump administration has been engaged with both Kyiv and Moscow in search of peace, while GOP lawmakers have pushed for secondary sanctions against Russian President Vladimir Putin. “He didn’t get what he wanted, which was…