'JD or Marco?’: Iran war raises 2028 stakes as Trump weighs Vance vs. Rubio

By Steve Holland and Nandita BoseWASHINGTON, March 29 (Reuters) - As the war in Iran threatens to imperil President Donald Trump's legacy, the political stakes also are rising for two of his top lieutenants: Vice President JD Vance and Secretary of State Marco Rubio.The pair, widely viewed as potential successors to Trump, have been thrust into still-developing negotiations to end the war at a moment when the Republican Party is already weighing its post-Trump future.