WASHINGTON — As President Trump cranks up pressure on Iran , Pentagon brass are quietly lining up a wide menu of military options — which could put US boots on the ground in a major war for the first time in nearly half a decade. For now, Trump is pursuing a dual-track strategy: building overwhelming military pressure while leaving the door open to a deal — even extending a Friday deadline for Tehran to meet US demands. Meanwhile, thousands of US troops, including elements of the elite 82nd