(ANSA-AFP) - MOSCOW, SEP 29 - Russia has threatened retaliatory measures after YouTube blocked the German-language channels of state broadcaster RT for violating coronavirus disinformation rules. The US video-sharing platform told German media on Tuesday that it had issued a warning to RT for violating its coronavirus disinformation guidelines and then shuttered two channels for breaching user terms. The move comes amid an escalating standoff between foreign tech companies and the Kremlin, which accuses them of interfering in Russian politics, including by hosting content supportive of jailed opposition leader, Alexei Navalny. Russia's foreign ministry accused YouTube of an "unprecedented act of media aggression" which it said was likely aided by German authorities. "The adoption of symmetrical retaliatory measures against German media in Russia... seems not only appropriate, but also necessary," the ministry said in a statement. "We believe these measures are the only possible way to stimulate our partners' interest in a constructive and meaningful dialogue around this unacceptable situation," it said. (ANSA-AFP).