The United States has rapidly depleted its stock of crucial air defense interceptors, with approximately 80% of THAAD missiles already used, according to CNN sources. Simultaneously, Patriot missile stockpiles, vital for bolstering Ukraine’s air defense capabilities, have been halved. This significant drawdown raises concerns about the US’s ability to respond to potential conflicts elsewhere while continuing to support Ukraine. The rate of expenditure is straining the defense industrial base, facing challenges in rapidly replenishing these critical systems. Officials are reportedly working to accelerate production and explore options to backfill supplies, but these efforts take time. The situation highlights the substantial cost of supporting Ukraine’s defense against Russia’s invasion, particularly regarding advanced weaponry. This depletion impacts not only Ukraine’s security but also the broader US national security posture.