Why is Ukraine involved with the US in the Russia crisis?

Ukraine is involved with the US in the Russia crisis primarily due to its ongoing conflict with Russia, which began with the annexation of Crimea in 2014 and continued with the war in eastern Ukraine. The US has supported Ukraine through financial aid, military assistance, and diplomatic efforts to counter Russian aggression and uphold Ukrainian sovereignty. This partnership is rooted in shared democratic values and the US's broader strategy to maintain stability in Eastern Europe and deter further Russian expansionism. Additionally, Ukraine seeks support from the US to enhance its defense capabilities and strengthen its ties with Western institutions.