The action itself that has been taken jointly by the United States and Israel is against a variety of targets all over Iran... Success number one is that there's absolute air superiority. Direct, coordinated military strikes by the US and Israel against a heavily armed state actor (Iran) represent a massive expansion of the war. This necessitates immediate and sustained replenishment of munitions, air defense interceptors, and aerospace hardware, directly benefiting top-tier US defense contractors. LONG. The defense sector will see a surge in government contracts and foreign military sales as the US, Israel, and Gulf states rapidly restock and upgrade their military capabilities. Defense stocks often price in geopolitical premiums quickly; if the conflict does not result in long-term structural increases to the Pentagon's base budget, the stocks could retrace.