WASHINGTON (Reuters) - The Federal Reserve on Wednesday said it will likely not raise interest rates until at least late 2014, much later than it had said previously, as it nurses a still-sluggish economic recovery. The Fed, after a two-day policy meeting, repeated its view that the economy faces "significant downside risks" but it offered little to suggest it was close to launching another round of bond-buying to prop up growth. It did say, however, that it would maintain a "highly accommodative" monetary policy stance. Economic conditions "are likely to warrant exceptionally low levels for the federal funds rate at...