The decision set off a train of events which led to his resignation.

【train】这一决定引发了一连串事件，最后导致了他的辞职。

But a few months later, Russian forces invaded Georgia, setting off a train of events that culminated in the full-scale invasion of Ukraine last year.

但几个月后， 俄罗斯军队入侵格鲁吉亚，引发了一系列事件， 最终导致去年全面入侵乌克兰。