Iran deal test: GOP rifts widen as Vance leads talks and Rubio stays silent

Secretary of State Marco Rubio has largely remained quiet as Donald Trump jokes about blaming Vice President JD Vance for the fate of a controversial Iran deal that Vance helped broker and is set to sign. The agreement would grant Tehran limited relief and lift a naval blockade while leaving core nuclear questions unresolved, with negotiations likely to stretch into the election season. The move highlights deep GOP divisions over Iran policy, and analysts warn the pact could shift regional power dynamics in the Persian Gulf as Vance promotes the deal and Rubio weighs a path back to more traditional Republican foreign policy.