The Iran war is entering a critical phase as the U.S. prepares to deploy nearly its entire stock of advanced JASSM-ER missiles. Reports suggest over 1,000 of these long-range weapons have already been used, sharply reducing reserves meant for other global theatres. With only a fraction remaining, concerns are rising about sustainability and long-term readiness. While these missiles help limit troop exposure, their rapid consumption highlights the scale and intensity of the campaign. As the conflict drags on, Washington faces tough choices between escalation and preserving strategic firepower.