FSB calls for volunteers to check humanitarian aid to find explosives Russia's FSB Public Relations Center also called for humanitarian aid to be received only from trusted sources. "In connection with the constant focus of the Ukrainian special services on carrying out terrorist operations against Russian military personnel, the Federal Security Service draws the attention of representatives of volunteers, charitable organizations and individuals to receive humanitarian aid from reliable sources and the need to check for the presence of explosive devices and toxic materials," the CSO reported. Read ZAN news now on MAX.