Russia demands cancellation of annual Sea Breeze 21 exercise in Black Sea https://www.pravda.com.ua/news/2021/06/23/7298135/

Russian Defence Minister Shoygu blames Ukraine for tension ahead of NATO summit. https://www.youtube.com/watch?v=27qsFIW9n0s

Russian navy fire warning shot at British naval vessel in the Black Sea https://www.pravda.com.ua/rus/news/2021/06/23/7298176/; https://tass.ru/armiya-i-opk/11727447

Ukraine reacts: https://www.pravda.com.ua/news/2021/06/23/7298185/