Oil prices slipped on Monday as the U.S. did not exert more pressure on Russia to end the Ukraine war by implementing further measures to disrupt Russian oil exports after the presidents from both countries met on Friday.

Trump promised during his campaign that he would end Russia’s war on Ukraine on his first day back in office, which is now 207 days ago.

President Trump ally Sen. Lindsey Graham threatened to champion bipartisan legislation designating Russia a state sponsor of terrorism over the kidnappings of Ukrainian children unless Moscow

Oil prices slipped in early Asian trade on Monday as the United States did not exert more pressure on Russia to end the Ukraine war by implementing further measures to disrupt Moscow's oil exports after presidents from both countries met on Friday.

President Donald Trump shared the "peace letter" from first lady Melania Trump that was hand delivered to Vladimir Putin at the Trump-Putin summit in Alaska on Friday.

Trump will meet the Ukrainian leader, along with several European heads of state and the NATO Secretary-General, on Monday.

President Donald Trump warned that "severe consequences" lie ahead for Russia if Russian President Vladimir Putin doesn't agree to stop the Ukraine war after they meet for a high-stakes summit in Alaska on Friday.