Your moral scruples may be admirable, Miles, but I’m not sure I can afford them. - Lois McMaster Bujold

Assassins can cross borders where armies can’t.

They stared at her curiously, and she caught snatches of conversation in two or three languages. It wasn't hard to guess their content, and she smiled a bit primly. Youth, it appeared, was full of illusions as to how much sexual energy two people might have to spare while hiking forty or so kilometers a day, concussed, stunned, diseased, on poor food and little sleep, alternating caring for a wounded man with avoiding becoming dinner for every carnivore within range - and with a coup to plan for the end.

Never do yourself, what you can con professionals into doing for you.