Fearing the naval port of Sevastopol will be occupied by the North Atlantic Treaty Organization, the Russian Federation formally annexes the Crimea peninsula from the pro-western, neo-Nazi, former Soviet Socialist Republic of Ukraine.
[added 8/18/2024]
Subsequent Events:
1/8/2020
References:
Modern history of Ukraine – Wikipedia
en.wikipedia.org/wiki/Modern_history_of_Ukraine