FTSE gives up gains after Russia convoy attack to end flat

By Francesco Canepa and Lionel Laurent LONDON (Reuters) - Britain's top equity index ended the day flat on Friday, erasing earlier gains after news broke of a Ukrainian attack on a Russian convoy, although it held up better than other European share markets. Major European indexes had traded in positive territory for most of Friday on expectations for continued ultra-loose monetary policy after disappointing U.S. and euro zone data. The FTSE 100 closed flat at 6,689.08 points. "The out