Akvarium is one of the massive Soviet Rock groups of the time, and followed the footsteps of Mashina Vremeni like many others. This song is anti-Russia-anti-war. This song is an emotional cry, staying that their option now, is to kill themselves, as all they've done is kill themselves. The "train" is a metaphor for humanity, humanity is traveling down the tracks, and now, they cannot stop. The most powerful line in this that symbolizes this hopeless fighting they've gone through, not just the arms race, but the actual conflicts and proxy wars Russia (and the US) created is summed up by the nuclear tension.
"Our train is on fire, there are no buttons to push
Our train is on fire, there is no place to run to
Long ago this land was ours before we got trapped in this war
And it will die if it is nobody's, it's time for it to be returned"
No buttons to press, they've pressed them all, this can be a reference to MAD (Mutually Assured Destruction) as, contrary to popular belief, no one wanted to press the button unless they have to. That is why he says in the next line "Our train is on fire, there is no place to run to." In other words, not only are they out of options, they're in a corner. There is a lot in this song, it is powerful, it is depressing, and it is one of the reasons why I think Soviet Rock is a genre that should be remembered and their songs should be translated so all can hear their message. This song isn't praising, but saying "We're done! This is a load of crap and we've been dying for a lost cause. We're an inch from pressing a button we wish not to press, we're in a corner, we're scared, and every day, our people lose their land and their lives, and soon, we can forget about it, everyone can, if we don't stop this train by putting it into reverse, and going back, and leaving this mess behind and fix the problems we've caused."