Investors sought the safety of government bonds, the yen, the Swiss franc and gold on Monday, as rising trade tensions dented stocks again and pushed oil close to bear market territory. After a torrid May that wiped $3 trillion off global equities, the worsening trade and broader economic backdrop made for a jarring start to June. European shares fell further and the Swiss franc jumped to a two-year high as Beijing sent another shot across Washington's bows on trade and then euro zone data came in weak [nS8N1Z9051], though the main groundswell was in bonds. German government bond yields -- ...