HAVANA (AP) — U.S. Secretary of State Marco Rubio on Friday defended the Trump administration’s decision to slap new sanctions on Cuba, the largest of which is against GAESA, or Grupo de Administración Empresarial S.A., a business conglomerate operated by the Cuban Revolutionary Armed Forces. In addition to GAESA and its leader, the sanctions announced Thursday included Moa Nickel, a Cuban joint venture with Canada’s Sherritt International, which immediately announced it would withdraw from the business, ending a 32-year presence on the island. The May 1 executive order and the new designations announced May 7 significantly expand the legal authority through which the U.S. government can levy sanctions on third-country nationals and firms, explained Lee Schlenker, a research associate at the Quincy Institute’s Global South program. “Not only are they subject to having their assets frozen but their U.S.…