Why did Ukraine not declare war on Russia when Crimea was "annexed"?

Because on the whole, Ukraine has not yet reached the ability to fight against Russia. If we want to fight against Russia, we must first have strong military capabilities, but Ukraine is still a small country, and its military capabilities are compared with Russia's incompetence.

Due to the geographical relationship between Russia and Ukraine, the two countries are closely linked. Under Russia's powerful military capabilities, NATO countries all want to weaken Russia, but the geographical location is only separated by a Ukraine. Ukraine's independence is necessary for Russia and can block some NATO forces.

The Krimi Peninsula is geographically adjacent to the Azov Sea in the north, the Black Sea in the south, Eastern European countries in the west and the Caucasus in the east. The peninsula is rhombic as a whole, with a vast plain in the north and rolling mountains in the south, covering an area of 24,730 square kilometers. The island is rich in iron ore, natural resources and a suitable climate. Judging from the geographical environment, climatic conditions, natural resources and economic system, the Crimean peninsula has many aspects.

Previously, before Ukraine left the former Soviet Union, the Crimean peninsula was always controlled by Russians. During the 100 years when Russia occupied the Crimean peninsula, both the former tsarist Russia and the later Soviet government constantly immigrated to the Crimean peninsula for cultural erosion. Primitive Tatars in Crimea occupied the main position and soon became second-class citizens, while Russians became the main occupiers of the island.

After the disintegration of the Soviet Union and the United Nations, Russia chose Crimea as a gift for Ukraine as a gift for Ukraine's integration into Russia. But what Russia did not expect was that Ukraine gradually embarked on its own independent road, so the Crimean Peninsula fell into the hands of Ukraine, and Russia was unwilling to rob Crimea.

Since then, Ukraine and Russia have embarked on the road of mutual intransigence, and Ukraine has gone further and further on this road. Russia's abandonment of history not only accelerated the rift between Russia and Ukraine, but also made the Russians, who occupied the absolute population advantage in Crimea, start the separatist movement.

In order to seize the Crimean peninsula, Russian troops attacked Crimea on 20 14, and the Crimean peninsula was annexed.

But Ukraine is powerless to oppose it and can only be occupied by Russia.

At present, Russia's military strength ranks second in the world, second only to the United States. Ukraine's military strength is far inferior to that of Russia, and the two countries are at war. Ukraine is obviously no match for Russia. Even with NATO's support, NATO will not easily go to war with Russia. After all, there are various economic and trade ties. Moreover, there are some Russians in Crimea. They belong to Russia. With political management, it is beneficial to the entire Crimean population.