World War III: Who Could Be Involved? The idea of World War III no longer feels like distant history — it feels like a global warning. With rising tensions across multiple regions, experts believe that if a global war ever breaks out, it would not involve just one or two countries. A World War III scenario could draw in major powers such as the United States, Russia, China, the United Kingdom, France, Germany, Israel, Iran, India, Pakistan, North Korea, South Korea, Japan, and many NATO and Midd