*Vietnamese version below: ------------------------------------------------------------------------------------------------------------ On February 24th, 2022, Russia conducted a military invasion on a huge scale into Ukraine, marking the swift escalation between these two countries since 2014. It has forced millions of Ukrainians to flee away from their homes, created the biggest refugee crisis in Europe after WW2. But what made Putin decide to invade Ukraine, and whether the report from Russian media was accurate so far? -------------------------------------------------------------------------------------------------------------------------------------------------------- 1. Russia and Ukraine's relation after Cold War -------------------------------------------------------------------------------------------------------------------------------------------------------- After the Soviet Union collapsed in 1991, Ukraine was still influenced by Russia in terms of poli...