Israel says it has largely knocked out Iran's air defenses. In contrast, Israel still has strong air defenses in place, though some Iranian missiles are breaking through with lethal results.
The Pentagon has proposed cutting 8% of its budget annually for five years but prioritized funding in areas like drones, military assistance for the southern border and a U.S. Iron Dome.
The highly sophisticated, multibillion-dollar defense system has been under constant redevelopment since its inception in the early 2000s. Here's how it works.
