Explainer-Drones and mines: taking Kharg Island would pose risks for US troops

By David BrunnstromWASHINGTON, March 26 (Reuters) - President Donald Trump has been weighing whether to use ground forces to seize Iran's strategic oil hub of Kharg Island, an operation analysts say could be achieved quickly, but leave U.S. troops in great peril and prolong rather than shorten the war.WHERE IS KHARG ISLAND AND WHY IS IT IMPORTANT?