Russia expelled 10 American diplomats and imposed sanctions on eight officials in tit-for-tat moves retaliating for new U.S. punitive measures, but stopped short of responding to American restrictions on its sovereign debt. The Russian government could take steps that harm the interests of U.S. businesses but will hold those in reserve for the moment, Foreign Minister Sergei Lavrov told a press conference on Friday. The moves come after the U.S. Thursday announced sanctions on 32 entities and individuals and six Russian companies over allegations that Moscow was behind a hack on SolarWinds Corp. and interfered with last year’s presidential election. The Kremlin denies any role in those attacks. Both sides said they wanted to prevent the current tensions from spiraling. President Joe Biden said Thursday the U.S. doesn’t want to kick off a cycle of escalation but is ready to take additional moves if needed. Lavrov, too, warned that Russia could take additional measures -- he threatened to oust as many as 150 more U.S. diplomats -- “if the ‘exchange of pleasantries’ continues,” he noted ironically. Despite the new sanctions on Russia, the Kremlin has been at pains not to close the door to Biden’s offer of a summit, made in a phone call with President Vladimir Putin Tuesday. The planned meeting comes after Russia sparked rising tensions by massing troops on Ukraine’s borders. “As we have already said, we responded positively,” Lavrov said. “Now we’re studying various aspects of this initiative.” Russia won’t immediately respond to the U.S. decision to ban its financial institutions from buying new Russian government debt in the primary market, Lavrov said. “We for obvious reasons don’t have comparable leverage over the U.S.,” he said. The ruble and Russian bonds initially fell on reports of the new U.S. sanctions but later made up most of their losses. Lavrov also said a top Kremlin official had “recommended” the U.S. ambassador return to Washington for consultations. Moscow summoned its envoy to Washington back to Russia last month after Biden answered affirmatively when asked by a reporter if he thought Putin was “a killer.” Russia also will no longer allow the U.S. to employ local or third-country staff at its diplomatic facilities, won’t offer short-term visas for diplomats and will restrict their movements more, he said. Russia also will close groups funded by the American government that he accused of meddling in its domestic politics. Separately, Russian prosecutors Friday asked a Moscow court to declare opposition leader Alexey Navalny’s Anti-Corruption Foundation and his Moscow campaign headquarters as extremist organizations, stepping up a crackdown. The group warned that the designation could subject all of its staff and volunteers to criminal prosecution. Putin’s most prominent opponent has been in prison since he returned in January from Germany, where he was treated for a near-fatal nerve-agent poisoning that he and Western governments blamed on the Kremlin. Russian authorities deny any involvement. Navalny, 44, has been on a hunger strike for more than two weeks protesting prison authorities’ refusal to allow him proper medical care. His allies said Friday guards threatened to begin force-feeding him, citing a worsening of his health detected in a blood test. The Penitentiary Service didn’t respond to a request for comment. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Have a story to tell? Fill out this survey for a chance to have it featured on Bloomberg Quicktake: https://cor.us/surveys/27AF30 Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake