Rex W. Tillerson, a former chief executive of Exxon Mobil, had been among President Trump’s most well-regarded cabinet choices. He is replaced by Mike Pompeo, currently the C.I.A. director.
The views of Mike Pompeo, the C.I.A. director, have put him in good stead with President Trump, who has come to value his pungent opinions and hard-charging style.
President Trump is likely to present the proposal soon, despite risking swift rejection by the Palestinians and already having taken on another thorny dispute, with North Korea.
In a 75-minute performance in western Pennsylvania, it was President Trump, vintage 2016: rambling and fiery, boastful and jocular — the part of being president that he loves perhaps the most.
The itinerary will include Peru, where President Trump will attend a summit meeting with leaders who have criticized his policies on immigration, and Colombia.