The U.S. military is increasingly concerned that the Caribbean could become an "offensive island chain" for China as Beijing expands its footprint in the region in a way that could increase combat access and potential force projection, jeopardizing the United States' strategic positioning in its own hemisphere. Adm. Alvin Holsey, head of U.S. Southern Command, issued that warning Feb. 13 in written testimony for the Senate Armed Services Committee, assessing that Latin America and the Caribbean have become a crucial...