The United States said it will carry out military flights in Guyana on Thursday in a joint operation as the South American country faces soaring tensions with neighboring Venezuela over a contested oil-rich region. “In collaboration with the Guyana Defence Force, the U.S. Southern Command will conduct flight operations within Guyana on December 7,” the American embassy in Guyana said in a statement, noting the flights are part of “routine engagement” to enhance the security partnership between the two countries.