Why would Trump pull his own vice president off the Iran talks?

Washington and Tehran are talking through intermediaries while they decide how to proceed. US officials say Vance has taken a more active diplomatic role than the special envoys, and he reportedly considered meeting Iranian officials in person.

Then Donald Trump posted on Truth Social: I have asked Vice President Vance to focus his complete and total attention on the Massive Corruption and Crime taking place in Democrat run Cities and States throughout the U.S. In the same post he said the US does not need a deal with Iran.

Vance had blamed the war for the Republicans' midterm losses, and Trump's post now cuts across his push for talks with Tehran. The Strait of Hormuz has been largely blocked since the war began, and Secretary of State Marco Rubio says economic pressure on Iran is working.