Russia's Foreign Ministry said on April 26 that it had summoned Norwegian Ambassador Robert Kvile over Oslo's expulsion of 15 Russian diplomats earlier this month. The ministry said it had announced 10 Norwegian diplomats were designated persona non grata, and that there will be other retaliatory measures after Norway's "unfriendly acts," including restrictions on hiring Russian citizens at Norway's diplomatic missions. Moscow's relations with European states, especially those neighboring Russia, have been tense since the Kremlin launched its unprovoked invasion of Ukraine in February 2022.