Russian President Vladimir Putin accuses Ukraine of "provoking armed confrontation" with pro-Russian separatists in the war-torn eastern portion of the country. Putin also said that Ukraine failed to comply with the July 2020 ceasefire of the conflict, which has killed over 14,000 people since it broke out in 2014.
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.
A fire at a warehouse in Moscow, Russia, kills at least 17 people, all migrant workers from Kyrgyzstan. The Investigative Committee of Russia, which reports directly to President Vladimir Putin, says a criminal inquiry has been launched.
NATO's Aegis Ashore Ballistic Missile Defense System becomes partly operational at Romania's Deveselu airbase, as U.S. Navy personnel takes control of the site after years of construction. Aegis Ashore facilities in Romania form part of NATO's European missile defence system, with another site under construction in Poland expected to become operational by 2018. The United States Ambassador to Romania Hans G. Klemm says that they have explained to the Russians on numerous occasions that the missile system is, "not directed at Russia, nor does it have the capability to threaten Russia." The head of Russia's Strategic Missile Troops, Colonel General Sergei Karakayev, has dismissed the purported effectiveness of the missile defense system, saying Moscow develops “brand new and effective means and techniques to penetrate any missile defense system”.
Russian President Vladimir Putin unveils a new $50 billion drive for the country to preserve its status as a top space power, including the construction of the new Vostochny Cosmodrome to fly humans to space by the end of the decade.
At the same time, Prime Minister Benjamin Netanyahu also told a meeting of the Israeli Cabinet that, if necessary, he would be prepared to authorize a substantially broader operation, though he did not indicate whether the 75,000 Israeli soldiers put on reserve would be used in a future ground operation or not. Egypt, whose leaders have been working with the U.S., Hamas leaders, the Arab League (which has convened an emergency meeting), Turkey's Prime Minister Recep Tayyip Erdoğan, and Russian President Vladimir Putin, has been trying to secure a (lasting) cease-fire, to avoid a repeat of the 2008 war. During his Asia trip, U.S. President Barack Obama reiterated that Israel had a right to use any means possible to keep its citizens safe from external attacks.