Saudi Arabia's Defence Minister makes a surprise visit to Tehran just days before key U.S.-Iran nuclear negotiations. With rising tensions, strikes in Yemen, and talk of military action, speculation is swirling over whether Riyadh is carrying a secret message from Trump. Meanwhile, the U.S. warns it's ready to go 'deep and big' if diplomacy fails. The meeting highlighted Saudi Arabia's growing role as a regional mediator, even as Riyadh pushes back against President Trump's controversial Gaza plan, which clashes with its long-standing support for a two-state solution.