Iran, Israel, United States, Lebanon, Iraq, Jordan, Kuwait, Bahrain, Qatar, Saudi Arabia, United Arab Emirates, Oman, Azerbaijan, Cyprus, Syria, Yemen, Russia, Ukraine and North Korea are all violently involved in war. Today's technology, especially drones, allows a slow burn world war instead of the much more violent previous ones.
Another difference is the rules of war are now being routinely ignored and without consequence. Putin specifically targets civilian populations, which is a war crime.
Furthermore, today's technologically intensive warfare means that Musk and/or Trump can throttle satellite intelligence to Ukraine as a tactic favoring Russia to kill more Ukrainian civilians due to lack of warning. That's just one example of how technology itself is a weapon in this world war.
