lol Russia and China also don't want Iran to have nuclear weapons. US and its proxies would just bomb Iran and make them surrender.
Russia relied on Iran for military equipment during the early stage of the Ukraine invasion until it increased its local capacity to produce. I think Iran will be disappointed that Russia is playing to the gallery instead of showing signs that they are behind them.
Now, was this a Trump personal decision on attacking Iran on behalf of the Israel or is the action constitutionally backed by the US Congress? This something to look into.
Trump is an emperor. Republicans control the Congress making him to command so much powers. He is not accountable to any institution not even the courts.