the golden dome for one-----Critics such as Mulvihill warn that a space-based missile shield might backfire, making the world less secure rather than more. The reasoning is simple: if one side develops a defence system that can shoot down incoming missiles, the other side may respond by building even more missiles to overwhelm it."This has always been the problem with anti-ballistic missile systems," says Mulvihill. "You can overload them. That’s what happened in the 1960s and 70s. The US and USSR just added more warheads. You end up with more missiles, not fewer."Every defence system has a limit. And if the Cold War taught us anything, it’s that superpowers will build as many warheads as it takes to ensure at least one gets through.Golden Dome, Mulvihill argues, risks repeating that cycle on an even larger scale.