But by betraying them, it can sometimes get the other government to do it.

That Abdul Ali betrayed Scharnhoff to me, proves one of two things.

Abdul Ali was lying, and Scharnhoff harmless--or in some way Scharnhoff has fallen foul of his French paymasters and they want him punished.

Very likely he has drawn French money, for their purposes, and has misused it for his own ends.
Or perhaps they have promised him money, and wish to back down.
Possibly he knows too much about their agents, and they want him silenced.

They propose to have us silence him.