Good Day Victoriaaa
I agree with lexindica. I should think not on your question: Could America possibly be going to war with Russia. I would imagine that one critical thing that holds them back, is the same thing that prevented the two powers from having a "hot" conflict during the Cold War era of about 1945 to 1989.
The two states have nuclear weapons. The Cold War was a lot like Greek mythology, which was about the gods of Olympus carrying out their conflicts with each other through human beings. The Olympians could not come into direct physical conflict with one another, because their elemental powers might destroy the entire world, along with themselves. So it was necessary to channel the conflict through a safer channel, humans, the Greeks, "heroes."
It is the same with The United States and Russia. They could never afford to come into direct, physical military conflict because there was always the possibility that the situation might go nuclear. Therefore, they had to channel their ideological conflict through a safer channel, The Third World. Like each of the Greek gods who tried to achieve ideological supremacy (by having more people on Earth worship him or her, than any of his or her rivals -- all the rest of the Olympian gods; so too did the United States and the Soviet Union engage in this type of ideological struggle -- to get more of the world than they other power either pledging allegiance to capitalism and "The American Way" or Soviet-style communism.
Russia and the United States aren't ideological enemies anymore. In various areas they are strategic partners. If anything (and this is also very unlikely), we'll sooner go to war against Iran and other Middle Eastern states associated with the "axis of evil," and so forth -- and probably expect and get Russia's help in the "War on Terrorism.'