Translation of "Trickery" in French

This is Cao Cao's trickery.

C'est la duperie de Cao Cao.

Trade is the school of trickery.

Le commerce est l'école de la tromperie.

As diplomatic trickery, to devastate northern Bulgaria and eliminate a number of Ottoman

tout autant que ruse diplomatique, pour dévaster le nord de la Bulgarie et éliminer un grand nombre

Tom remained silent, his mouth agape. He was completely incredulous in front of such trickery and bad faith.

Tom resta coi, les bras lui en tombait. Il était totalement incrédule devant tant de fourberies et de mauvaise foi.