The head of the U.S. military's Southern Command will retire later this year, a high-profile departure that comes as the Trump administration strikes alleged drug-carrying boats in the Caribbean and puts pressure on the Venezuelan government. Adm. Alvin Holsey announced his retirement from the U.S. Navy in a statement posted to social media on Thursday. He said he is retiring after 37 years in the Navy in mid-December — just over a year after he was first promoted to lead Southern Command, or SOUTHCOM. "I am confident that you will forge ahead, focused on your mission that strengthens our nation...