In addition, as far as I know, the President of the United States can not personally press the button and launch missiles.
And, of course, it is profitable to frighten voters with a threat from Russia. This is a common tool that has been used for a long time.
He doesn't 'personally' press the button but he is the ultimate authority and can command the launch, if the command is obeyed or not is a different matter.
I'm sure that also applies in Russia and I'm sure America is also used as a threat to frighten Russian citizens.
You seem to be expressing an opinion that Russia is a purely altruistic and entirely peaceful nation state, I hope I'm wrong?
In the USSR, we were strongly frightened by an attack from the United States. We prepared for nuclear war even in school. There is no such thing now. The population is more presented with information about the expansion of NATO military bases. And this is true - Russia is surrounded by these bases. At the same time, you will not find Russian bases near NATO countries. But people are now not as trusting as in the USSR, and few people are concerned about what is happening outside. The population does not perceive this as a real threat of attack, it is some pressure and some probable danger, from which we have protection and there is no particular concern about this.
It would be good for you to understand that Russia has a slightly different system. Our President has the maximum power, he is not part of the government, he is the leader. This does not mean that he is the sole manager of everything, but he has the authority to do so.
In Russia, the TV channel will not be able to interrupt the President's speech. More precisely, it can, but only once.
Historically, Russia did not start wars, did not attack other countries, but ended wars with victories. All military campaigns of the USSR and Russia abroad were at least formally honest-in support of the current legitimate government.
We have no desire for war in our nation. We still have a generation that survived the war. We are brought up from childhood that war is the most terrible thing.
I understand how strongly you are being served the Russian threat. This is convenient for the government. But isn't the threat of global crooks, financial tycoons, and transnational monopolies stronger? Maybe they have a stronger impact on your personal life, and not me with a balalaika and a bottle of vodka in my hands? Think about stereotypes.
Believe me: we don't have the rhetoric of war with anyone. Of course, our country has some interests abroad and there is a demonstration of force. Unfortunately, such is the world. When the Soviet Union collapsed, we became completely open and formed a great friendship in the United States, but at this time there was poverty and devastation inside the country. We didn't like it.