A flight to safe-haven assets pushed U.S. Treasury yields to their lowest levels since September 2017 on Monday, while gold hit a 10-week high. Market uncertainty has sent investors fleeing for safety, including low-risk debt, to seek protection from market volatility as trade conflicts between the United States and its trading partners have deepened. Yields on U.S. two-year notes are on track for their biggest two-day fall since 2008, while U.S. benchmark 10-year Treasury yields earlier hit 2.071%, their lowest level since September 2017. German government bond yields fell to an all-time l...