The world has been a global village since time memorial. If you do study history s Worldwar (1&2) were both started a simple miscalculation . In this case a simple mistake. World war 3 will see the use of Nuclear Weapons . If Atomic Bombs were used at the tail end of WW2 actually after WW2 . They they will be used in WW3 .
You talk of Trade but there is economic war ongoing now with the Russian sanctions thats a component of war.
Whats waiting to trigger worldwar 3 is a simple misjudgement and the special operation will become a war targetting other countries.
Its could be coming soon and use of tactical nuclear weapons will be seen.
There is never going to be another 'world' war. Trade and interconnectedness means the world is a global village. Ukraine/Russia is already evidence to the impossibility of a world war.
Russia is the gas station for Finland, who nukes their strategic customers? Despite the noise about clean energies, the Ukraine conflict has cemented Europe position as Russian bitches.
As Putin said It would be a Finlands and Swedens Mistake in joining NATO.
Thirld War has just began and it will end involving use of Nukes. Finland and Sweden are setting up themselves to being a target .