Pest managers could therefore encourage people to launch pre-emptive strikes against them by organising intensive trapping campaigns at the right moment.
ECONOMIST: Pest control
2.
The United States rejects the North's claim that such a deterrent is necessary, saying it does not intend to launch pre-emptive strikes against North Korea.
NPR: Despite Threats, Risks Temper Korea War Tensions
3.
Without the ability to launch pre-emptive strikes, the naval vessels must wait until something happens until they can act, and even then they are limited in what they can do.