UPDATE 1-Musk's invitation to chat with Putin on Clubhouse? 'Very interesting,' says Kremlin Reuters 2/15/2021 (Adds details, quotes) MOSCOW, Feb 15 (Reuters) - An invitation from Tesla boss Elon Musk for Russian President Vladimir Putin to join him for a chat on a social networking app? "Very interesting," the Kremlin said on Monday. Musk tagged the Kremlin's Twitter account on Sunday, tweeting: "Would you like (to) join me for a conversation on Clubhouse?" "It would be a great honour to speak with you," Musk, the world's richest man, added in a follow-up tweet in Russian. Kremlin spokesman Dmitry Peskov told reporters on a conference call: "In general, this is of course a very interesting proposal, but we need to understand what is meant, what is being proposed... first we need to check, then we will react."