The United States imposes retaliatory measures against Russia in response to the 2020 United States federal government data breach, its interference in the 2020 United States elections, and the occupation of and human rights abuses in Crimea. The U.S. bans trade in bonds newly issued by Russia's Central Bank, National Wealth Fund, and Ministry of Finance, formally names the Russian Foreign Intelligence Service as responsible for the data breach, blacklists 32 Russian entities and individuals, and expels ten Russian diplomats. Russia denies these allegations. The Russian Ministry of Foreign Affairs summons the U.S. ambassador to inform him that "a series of retaliatory measures will follow soon". A spokesperson for the ministry also says that a potential summit between both countries' leaders may not take place.
A prison riot breaks out at a high-security prison in Angarsk, Irkutsk Oblast, Russia, allegedly in response to an officer beating an inmate. Large sections of the prison are set on fire, and casualties are reported.
Russian citizens head to polls to cast their votes in elections for heads and council members of federal subjects, among which an election for the Moscow City Duma, members and heads of local legislatures, and in by-elections to the State Duma.
Russian President Vladimir Putin signs a law – voted by the State Duma on 22 May and approved by the State Council on 30 May – with countermeasures against actions of the United States and other "unfriendly" countries.
Russia and China have blocked a proposal by the United States and France to impose U.N. sanctions on Central African Republic's former President François Bozizé and two other people linked to the conflict.