Tatarstan is a nation in Europe.
Tatarstan had a long struggle under Russian rule and it wasn't until 1948, with help of Republic of China, that Tatarstan managed to be free from Russian rule. Though because it was completely surrounded by the Soviet Union at the time, the Chinese had stayed to occupy the territory, though it was still too far away from China. Later in 1960 some of the Chinese military were lined up on the Chinese-Soviet borders so that in case the Soviet Union tried to invade Tatarstan, China (and Korea and Japan to an extent) would invade the Soviet Union. Due to this, the Soviets had to line up some of their military near the Soviet-Chinese borders. After the Soviet Union fell in 1985, Tatarstan was finally safe from invasion and the Chinese military left Tatarstan. Tatarstan maintains very strong ties with China, Korea, and Japan. Tatarstan-Russian relations are still weak, but it shows signs of improvement.