On Saturday, Russian troops attacked Kharkiv with guided aerial bombs, damaging 18 residential high-rise buildings. On Sunday, Ukrainian President Volodymyr Zelenskyy began his visit to the United States. Read more about what happened over the weekend. Russia’s war against Ukraine: Latest News for September 21 Ukraine’s defense forces hit two Russian military arsenals in Tikhoretsk (Krasnodar Krai) and near Oktyabrsky (Tver region) and attacked the Podlet radar station.Defense Minister Rustem Umerov said that Ukraine was consulting with partners on supplying several types of fighters, not only…