https://www.reuters.com/article/us-facebook-brazil-cade/brazil-antitrust-agency-revokes-decision-blocking-whatsapp-cielo-venture-idUSKBN2413NG >Brazilian antitrust watchdog Cade on Tuesday said it was revoking a previous decision suspending a payments system recently launched by Facebook Inc's WhatsApp messaging service in partnership with card processor Cielo SA.