CNN: The preliminary meeting between Donald Trump's advisors and Vladimir Putin has been postponed, which could affect the anticipated summit between the two leaders.

President Donald Trump hoped for a quick summit with Russian leader Vladimir Putin, but the preliminary meeting between their advisors, Marco Rubio and Sergei Lavrov, was postponed. Although Trump announced that he agreed with Putin on a meeting of advisors, White House officials confirmed the postponement of the meeting between Rubio and Lavrov, without providing clear details on the reasons. Differences of opinion regarding the conflict in Ukraine could be a factor.

Trump continues to seek diplomatic solutions to end the war, and Rubio emphasized the need for cooperation for a sustainable resolution. Additionally, the Kremlin described the discussion between Rubio and Lavrov as constructive, but sources indicate a stalemate in Russia's position.