Story highlights Trump abruptly changed his mind

His tweets undercut Cabinet members

Washington (CNN) Donald Trump's plan to work with Russia's Vladimir Putin on cybersecurity died an unceremonious death, ending in under 140 characters roughly 12 hours after the US President last defended it.

The abrupt move signaled once again that Trump has no qualms about changing his mind when a policy position brings the White House critical coverage, and in the process undermining some of his top staff and Cabinet members.

Trump's top aides -- including Secretary of State Rex Tillerson and Treasury Secretary Steve Mnuchin -- touted an agreement to cooperate with Russia on cybersecurity as one of the key wins that came out of Trump's meeting with Putin on the sidelines of the G20 in Hamburg, Germany. Speaking with reporters after the meeting, Tillerson, Mnuchin and others hyped the agreement as a step forward for US-Russia relations.

Trump spokeswoman Sarah Huckabee Sanders downplayed the formerly touted plan by saying it was a discussion without "formal structure in place" for the cooperation.

"This was part of a discussion in that meeting, and look, we recognize that Russia is a cyber threat but we also recognize the need to have conversations with our adversaries," Sanders said, adding that she didn't ask Trump whether he trusts Putin.

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