Kremlin calls American allegations 'conspiracy theories,' denies that it is promoting fake news via English-language websites

'We have learnt a lot since 2016,' says social media giant's founder, likening the task to 'arms race' against Russia, Iran and China

Few Israelis are aware of the intense information battle being fought between Moscow and Kyiv over anti-Semitism and Israel. Some believe the Jewish state is on the wrong side

State Department officials say social media accounts tied to Moscow are promoting conspiracy theories that Washington is behind COVID-19 outbreak