Rimuru learns about Clayman and the schemes of the Kingdom of Falmuth, but no matter how hard he wishes for it, his fallen comrades and their peaceful lifestyle will never return. He's just about to give up when Eren tells him of a fairy tale that might offer a glimmer of hope. The probability of success is about 3%... but if Rimuru can manage to become a Demon Lord by taking in the souls of 10,000 humans as nourishment, he just might have a chance at bringing his comrades back to life. As Falmuth's army of 20,000 men marches toward Tempest, Rimuru takes hold of that hope and decides to become a Demon Lord.
but what he meant was that he's 
starting a war between Tempest
لكن ما قصده هو أنّه أشعلَ حرباً بين تيمبيست
Aber dann war es wohl einen Krieg
zwischen Tempest und dem Königreich Farmas.
pero, por lo visto, la guerra
era entre Tempest y Falmuth.
pero por lo visto la guerra
era entre Tempest y Falmuth.
mais il devait plutôt s’agir du conflit
qu’il savait imminent
Invece intendeva scatenare una guerra
Mas era a vontade de criar uma guerra
entre Tempest e o Reino de Falmuth.
но, полагаю, Клейман 
подразумевал войну между Темпестом