What would create a world war? What would create on today?

A world war is created when a superpower out powers another superpower on a certian issue. Certian events escalade form that issue from the main superpowers and others main superpowers. As it goes on more wars go on and many countries start allieing to become bigger. Its possible for a wold war to start this day. Its just need arealy big event to start. From that the main superpower that wants to strikeis the first to decleares war.