Telegram from Sir Archibald Clark Kerr [British Ambassador to the Soviet Union, later 1st Lord Inverchapel] to WSC reciting a message from Joseph Stalin of 22 April regarding chemical weapons: thanks WSC for his willingness to issue a warning against the use of poison gases by Germany and Finland; details quantities of hypochloride of calcium, chloramine and liquid chlorine required by the Soviet Union; proposes to send Andrei Georgiyevich Kasatkin (Deputy Peoples Commissar of Chemical Industry) to London.