On the way to Argentina for G20 summit, US President Trump also tweeted that he looks forward to a meaningful summit again as soon as this situation is resolved.
White House Press Secretary Sarah Sanders said US President Trump's decision came after talks with US Secretary of State Mike Pompeo, White House Chief of Staff John Kelly and US National Security Advisor John Bolton.
The Kremlin has no official information on the US President's decision to cancel the meeting with Russian counterpart in Argentina.