Why did war break out between Ukraine and Russia?

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

Hegemonic countries such as the United States and some NATO members instigated the Ukrainian government behind the scenes in order to suppress Russia, which led to intensified contradictions. It was also related to the wrong judgment and decision of Ukrainian President Zelensky, which led to the Russian-Ukrainian war.

Ukrainian President Zelensky, an actor, originally wanted to join NATO just to hug "American michel platini's thigh, and wanted to 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 will 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 changing world, over-trusts 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 go to war with Russia. In the disputed area with Russia, deploy troops, display superb weapons and 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 that the United States has fought in Vietnam, Afghanistan and Iraq for 10 years.