One US official told CNN that the US attack against Kesham Island was in response to Iran's launch of a surface-to-air missile at a US fighter jet. A source familiar with the matter says that the strikes were kept secret so as not to exaggerate the matter. Note that, similar to the sporadic US strikes against Iran over the past few weeks, Iranian air defense actions against US military aviation are not irregular. Iran continued to intercept American drones operating in the area of the Strait of Hormuz, and the last round of attacks against Kashem Island a few days ago was also conducted in response to the launch of surface-to-air missiles against a fighter jet.