Moscow has lodged a protest with Washington, accusing US officials of tearing down Russian flags from two of its diplomatic missions in the country, the foreign ministry said today.
In late August, the United States ordered Russia to close its consulate in San Francisco and two other installations as relations between the two former Cold War enemies took another dive.
"Yesterday we learnt about a new ... hostile act of the US authorities against our diplomatic missions," foreign ministry spokeswoman Maria Zakharova told reporters today, warning that Moscow would retaliate.
"Obviously the Russian side has never agreed to its flags being removed," she added, calling the removal "a violation of a Russian state symbol."
"The Russian side will decide on retaliatory measures," Zakharova said.
Earlier Russia's envoy to Washington Anatoly Antonov said he had sent a "decisive protest" to the US over the removed flags.
"Such steps only complicate US-Russian dialogue," he said in televised remarks.
"We demand an immediate end to the takeover of our property in the US which is accompanied by offensive actions," Antonov added.
Moscow had previously accused the United States of searching its missions and diplomatic staff's accommodation.
The latest diplomatic spat is the latest twist in tortured ties between the US and Russia, which have slumped to their lowest point since the Cold War following the Kremlin's seizure of Crimea from Ukraine in 2014.
The West slapped punishing sanctions on Russia over its meddling in its ex-Soviet neighbour, sparking a revenge embargo from Moscow against agricultural products.
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