European shares drop as trade jitters return

(Reuters) - European shares retreated from a four-year peak on Thursday as concerns about a U.S.-China trade truce resurfaced after U.S. President Donald Trump signed into law a bill supporting protesters in Hong Kong, drawing a sharp rebuke from Beijing.The law warns of sanctions against human rights violations in Hong Kong amid pro-democracy protests. In response, Beijing said it would take "firm counter measures" in what it views as interference in an internal matter.The pan-European STOXX..