U.S. : The United States is the only country in the world that has a military presence on every continent except Antarctica. Burns , the third highest ranking diplomat in the State Department , said he told the Serbian prime minister , Vojislav Kostunica , and his government that the U.S. `` would hold them personally responsible for the safety of our people . '' U.S. warns Serbia of responsibility to protect U.S. diplomats , building . Embassy evacuating nonessential personnel ; ambassador will stay in Belgrade . No embassy documents taken during Thursday attack and fire , spokesman says .
U.S. : The United States is the only country in the world that has a military presence on every continent except Antarctica. U.S. warns Serbia of responsibility to protect U.S. diplomats , building . Embassy evacuating nonessential personnel ; ambassador will stay in Belgrade . No embassy documents taken during Thursday attack and fire , spokesman says .