Oil prices jumped and government debt prices edged up on Tuesday as concern about global tensions rose after Turkey shot down a Russian warplane near the Syrian border. U.S. stocks erased early declines, ending slightly higher as energy shares rose with oil prices. The dollar fell against the traditionally safe-haven Japanese yen, helping to push gold up. ADVERTISING Travel stocks fell after the U.S. State Department late on Monday warned U.S. citizens of the risk to worldwide travel posed by what it called increased terrorist threats. United Continental, American Airlines and Delta Air Lines each fell at least 2 ... (full story)