There is no doubt that humanity is doomed and it is only a matter of time because of human greed. But about World War 3, I don't think it will happen soon or it will be a nuclear war like many people are imagining. I believe that war in the modern world will be economic war, biological war (disease, pandemic...) and they will be more unpredictable than physical war.
Israel and its allies seem to have the freedom to kill at will. The UN has proved that it is powerless. So I doubt if the conflict will lead to a world war.
Who is the leader of the United Nations? Who is the one who supports and gives Israel the freedom to attack? They are terrorists, bloodthirsty killers who claim to be messengers of peace. They call Russia's attack on Ukraine a brutal and evil war, but they are the ones supporting butchers like Israel who are killing innocent people. I find what Israel is doing in the Middle East a hundred times worse than what is happening on the battlefields of Russia and Ukraine.
I don't think the West will approve Ukraine's appeal to use long-range missiles against Russia. If such approval is given, Russia's reaction will determine if there will be another global war.
The United States and NATO have their own intentions in using Ukraine to confront Russia. Some newspapers are exaggerating the incident to make people believe that World War III is about to happen. But no, the United States will never let that happen because that is not their goal in this war, their goal is to weaken and exhaust Russia.
They are still the world's dominant power, they hold everything in their hands, so they will never let world war 3 happen because it will destroy everything they have. I never believed that the US wanted world war 3 to happen because it would destroy them, if things got out of control they would be willing to sacrifice some scapegoats.