Iran War: Loyalty Test for Trump's 2028 Contenders JD Vance and Marco Rubio

• The Iran conflict is a political test for potential 2028 Republican presidential candidates, JD Vance and Marco Rubio.
• Vance takes a cautious stance on US military involvement, while Rubio aligns with Trump's assertive position.
• Trump privately asks allies 'JD or Marco?' regarding succession, with the war's outcome potentially influencing their political standing.
• Trump's approval rating has fallen to 36% amid rising fuel prices and public disapproval of the Iran war.
• Rubio may consider a joint ticket with Vance if Vance runs for president, indicating evolving internal dynamics.