defense system
defence system

If they come inside, use the defence systems to kill them.

Most of the walls and defence system are from the 4th century.

But after that it was the same old story: we had to have an even better defence system.

I know next to nothing about missiles and defence systems.

But now a number of steps have been taken towards a common defence system.

This was, of course, not the case in Japan where their cities stood strong behind the defence systems.

But here it cannot be proven that the defence system developed only in the 4th century.

I repeat; do not wait until it is most of the way into the defence system before opening fire.

Europe's last chance could indeed be to create a genuinely European defence system.

The second point is the issue of the anti-missile defence system.