I assume most nations of the world taking part is correct. According to Wikipedia WW2 is considered to have started after the invasion of Poland and subsequently UK and France declaring war on Germany, however there were other events beforehand:

The causes of World War II included unresolved tensions in the aftermath of World War I and the rise of fascism in Europe and militarism in Japan. Key events preceding the war included Japan’s invasion of Manchuria in 1931, the Spanish Civil War, the outbreak of the Second Sino-Japanese War in 1937, and Germany’s annexations of Austria and the Sudetenland. World War II is generally considered to have begun on 1 September 1939, when Nazi Germany, under Adolf Hitler, invaded Poland, after which the United Kingdom and France declared war on Germany.

Considering how much the world has changed since then with advances in technology etc., I think WW3 will look very different if it happens.

The sad thing about all of this is that the Iranian citizens will suffer the most. Iran is one of the oldest settled countries in the world and has a very long history.

Don’t get me wrong, the Islamic regime is definitely not a good guy in all of this either. In fact, I don’t believe theocratic governments or even state religions should be a thing at all.

Good chat mate. Really compelling argument.

Just speculating really. Mind enlightening me what the clear line will be?

You’re probably right

You could argue it started when Russia invaded Ukraine. But I wouldn’t mind Trump being forever remembered in history as the instigator.

Anyone else get the feeling WW3 has already started but we just haven’t realised it yet?

Yeah… China’s been busy expanding their Belt and Road initiative across the developing world for the last decade. Meanwhile the US has spent the time fighting each other every election cycle.