He talked as a megalomaniac, other leaders are now putting him in his deserved place, now he will start learning baby lessons of international diplomacy, by the time he is learnt will have to suffer for his foolhardiness.Coaxing the Russians to stop
Being crude, spontaneous with witty responses may help in narcissist obsessed reality shows and such show businesses, but in international trade and diplomacy, timed and weighted responses are called for.
Now, he is actually begging Russia to stop so as to save his face.