Iran has issued one of its sharpest warnings yet, with top commander Gen. Abdolrahim Mousavi vowing a “decisive, regret-inducing” response as Tehran flaunts its expanding naval firepower. From new submarines to long-range sea-strike capabilities, Iran claims a level of readiness unseen in decades. Across the region, Israel—long dominant in air and land warfare—now faces a rising maritime front it has rarely prepared for.