There is a bridge that connects Crimea to Ukraine. When Russian tanks tried to invade Ukraine by crossing this bridge, the Ukrainian army thought that they had no choice but to destroy this bridge to delay the invaiding Russian tanks. One man offered to put a land mine on the bridge, but he noticed that there wasn't time for him to run away after placing a bomb on the bridge. He decided to do it while risking his own life.
He telephoned his brothers to tell that he would place a land mine on the