Editor's note: This is a developing story and is being updated.Russian Foreign Minister Sergey Lavrov held a phone call with his U.S. counterpart Marco Rubio on May 25 in which Lavrov told Rubio that Moscow will begin strikes on "decision-making centers," recommending that the top U.S. diplomat "ensure the evacuation of its diplomatic personnel," according to a read out provided by the Russian Foreign Ministry. The phone call follows a statement issued by Russia's Foreign Ministry earlier in the day announcing plans for a new round of mass long-range strikes on Kyiv, including on Ukraine's "decision-making centers," in what Moscow called retaliation for a Ukrainian strike in occupied Luhansk Oblast whose target remains disputed. Russia claimed a dormitory was hit, while Ukraine said it had targeted a Russian drone command facility.According to the read out, Lavrov warned of "systematic and consistent strikes" on Kyiv, while drawing attention to the statement recommending diplomatic missions evacuate staff in Kyiv. The phone call is the officials' first contact since May 5 when the counterparts reportedly discussed U.S.-brokered peace efforts. It was not immediately clear as to which party initiated the phone call. The State Department has not yet provided its own read out of the call.The Kyiv Independent has reached out to the State Department for comment. In addition to the threats, the Russian Foreign Ministry said that the two officials also discussed the situation in the Strait of Hormuz as well as Cuba.The threat came just a day after one of Russia's largest-ever mass missile and drone attacks on the capital, which killed two and injured over 80, as strikes were recorded in almost every district of the city.In the Russian Foreign Ministry's statement, foreign citizens, including diplomats, were encouraged to leave the city, while Ukrainian civilians were called upon to stay away from "military and administrative infrastructure of the Zelensky regime."Overnight on May 22, Ukrainian drones allegedly struck an educational facility in the city of Starobilsk in Luhansk Oblast, which has been occupied by Russia since the first weeks of the full-scale war.According to Moscow, 21 people, including children, were killed and dozens more injured in the attack on what was a dormitory and a neighboring building of the Starobilsk Pedagological College.Responding on the same day, Kyiv had called the Russian claim "misleading information," stressing that it strictly adheres to the international humanitarian law and strikes military infrastructure and facilities used for military purposes.Ukraine's General Staff reported that a strike was carried out in the area of Starobilsk on a command facility of Russian elite drone unit and school Rubicon, which works across the front line in Ukraine, but did not provide further details.On May 15, President Zelensky warned of Russian plans to strike the so-called "decision-making centers," including the building of the President's Office in central Kyiv.Russia frequently uses the narrative of retaliation as justification for major strikes against Ukrainian cities and civilian infrastructure, despite being the aggressor in its war against sovereign Ukraine.Despite having the means to do so, Russia has so far mostly refrained from striking the most important government buildings in Kyiv.Ahead of the phone call, Foreign Minister Andrii Sybiha said that Ukraine "should not succumb to this Russian blackmail," urging a "proportional" Western response to the threats, including "additional aid packages and additional sanctions.""(Russian President Vladimir) Putin must understand that he will achieve nothing through military means. Instead, he needs to save his country, if he still can," Sybiha added, referring to the impacts of Ukrainian long-range strikes on Russia's economy.