They likely would not, due to the curvature of the earth. The locations of the air defenses are known, and the cruise missile fly low such that the detection ra

They likely would not, due to the curvature of the earth. The locations of the air defenses are known, and the cruise missile fly low such that the detection range is limited to around 20km by the horizon. So they typically only get detected once they are close to their targets. This is why cruise missiles and drones fired from Yemen routinely hit their targets in Israel, in fact that happened just yesterday. Israel used ballistic missiles in all likelihood because those are the weapons that Qatar needs American help to intercept.