Israel has informed the United States that its stockpile of ballistic missile interceptors is running low as the war with Iran enters its third week, according to U.S. officials cited by the news outlet Semafor. The officials said Israel’s defense system had already been weakened by heavy interceptor use during last year’s conflict with Iran. Continuous missile attacks from Iran are now placing severe pressure on Israel’s long-range air defense network.

The report added that Iran has equipped some of its missiles with cluster bombs, making them harder to intercept and accelerating the depletion of Israel’s interceptor reserves. Washington had been aware of the potential shortage for months. A U.S. official told Semafor that the situation had been anticipated, emphasizing that the United States itself has sufficient reserves and is not facing a similar shortage.

It remains unclear whether the U.S. will supply Israel with additional interceptors. Previous military aid packages included missile defense systems, but new deliveries could strain America’s own stockpiles.