Why did war break out between Ukraine and Russia?

The fundamental reason for that outbreak of the Russian-Ukrainian war are as follows:

In order to suppress Russia, American hegemonic countries and some NATO members instigated the Ukrainian government behind the scenes, which led to intensified contradictions. This is also related to the wrong judgment and decision made by Ukrainian President Zelensky, which led to the Russian-Ukrainian war.

Ukrainian President Zelensky, who is an actor, only wants to join NATO, in order to hug "American michel platini" in the thigh and use NATO to suppress Russia. The hegemonic country of the United States secretly instigated Ukraine to go to war with Russia and provoked it wantonly, thus achieving the goal of suppressing Russia.

They sat there watching the fighting between Russia and Ukraine and benefited from it. This can not only suppress Russia as an opponent, but also sell weapons to Ukraine to obtain ill-gotten gains. In order to suppress Russia, some NATO members often entice Ukrainian President Zelensky to join NATO behind his back, and even promise Zelensky that "if there is a war between Russia and Ukraine, the North will agree to send troops to participate in the war".

Zelensky, which can't see through the changes in the world, has over-trusted the "boss" of the United States and the "brothers" of NATO members. I think with a strong background, since I don't consider all the consequences, I will go beyond the bottom line and fight Russia. In the disputed areas with Russia, we will arrange our troops and show our superb weapons to prepare for a showdown with Russia.

When will the Russian-Ukrainian war end?

As for when the war will end, the war will only end when the United States and western countries stop their military and economic assistance to Ukraine. As long as the United States and western countries do not stop their full support for Ukraine, the Russian-Ukrainian war will become a long-term war in Vietnam, Afghanistan and Iraq for more than 10 years.