Russia has struck Ukraine as if it was the first sign of conflict in Europe in response to Russia's demands to end NATO's expansion to the east. Origins of the Conflict : 1. Although there was tension among Russia and Ukraine which was a former Soviet republic for a long period the tensions began to get out of control by the beginning of 2021. In January, Ukrainian President Volodymyr Zelenskyy requested US president Joe Biden to let Ukraine become a member of NATO. 2. This was a source of anger for Russia began sending troops close to the Ukraine border to conduct "training activities" in the spring of 2013 and increased it in autumn. By the end of December, the US began to hype the deployment of Russian troops, and president Biden advised of harsh sanctions should Russia were to invade Ukraine. 3. Russia demands that the West provides a legally binding assurance to ensure that NATO will not conduct any military activities in the eastern part of Europe or Ukraine. Vladimir Putin claims Ukraine is an instrument of the West and never was an actual state. 4. This isn't the only time that tensions in the region between Russia and Ukraine have been at a high point. Russia has invaded Ukraine in 2014 after rebels supported by President Putin took over large swaths of easterly Ukraine and have been fighting the Ukrainian army ever since. In 2014, Russia had annexed Crimea. 5. As an ex-Soviet republic, Ukraine has strong cultural and social ties with Russia, and Russian is spoken widely in the country However, ever since Russia invaded Ukraine in 2014, those relations have become strained. read more...https://visaoperations.com/what-was-the-reason-russia-invaded-ukraine