Ukrainian media on September 21 initially focused on international reactions to Russian aggression, with the US condemning Russian violations of Estonian airspace and Estonia calling for a UN Security Council meeting. Concurrently, ongoing military clashes were reported, including 151 enemy assaults repelled and partisan activity in Smolensk.
Later in the day, attention shifted to Estonia's first-ever request for an emergency UN Security Council meeting following Russian MiG incursions. Ukraine's anticipation of a 19th package of sanctions against Russia and discussions around the likelihood of a third world war also gained prominence.
The day concluded with President Zelenskyy's planned meeting with Donald Trump at the UN General Assembly, as Trump pledged to defend NATO allies.