evidence: An email was sent on March 7 instructing some U.N. staff members not to use the words "war" or "invasion" when discussing the conflict between Russia and Ukraine. The message came from a regional office without clearance and is not considered official U.N. policy, organization officials told PolitiFact. U.N. leaders including Secretary General António Guterres and Rosemary DiCarlo, the organization’s under-secretary-general for political and peacebuilding affairs, used the words in tweets before and after the email was sent.