After Biden's administration took office, it adopted a tough policy attitude towards Russia, repeatedly encouraged Ukraine to confront Russia, expressed its support for Ukraine's accession to NATO, and strengthened its military assistance to the Ukrainian government. This series of actions has made the relationship between Ukraine and Russia even more tense, and also caused the frozen Donbass issue in eastern Ukraine to heat up again.
In this context, US military aid arrived in Kiev, the capital of Ukraine, NATO sent more warships and fighter planes to Eastern Europe, and the United States authorized the US embassy in Ukraine "American government staff" to voluntarily evacuate Ukraine, which made the situation in Ukraine highly tense and attracted great attention from international public opinion.