> Yes but you asked me when was the time when NATO trained on the border with Russia

No, I asked, and I will quote directly, “When was this time that Russia wasn't a threat and Ukraine was having trainings with NATO?”

That was the claim: that NATO conducted multiple trainings with Ukraine when Russia was not a threat, and that this was the casus belli for Russian aggression. Leaving aside that this would not be legitimate casus belli in any case, it is simply factually false: all the NATO trainings occurred during the war, after Russian aggression against Ukraine began. There cannot retroactively justify the aggression.