European shares retreat, Trump's China response awaited

(Reuters) - European shares pulled back on Friday as investors turned their focus to Washington's response to the Chinese parliament's approval of a national security law for Hong Kong, but major indexes were still on course to post monthly gains.The pan-European STOXX 600 index fell 1.1%, with U.S. President Donald Trump due to announce his response that could escalate tensions between Washington and Beijing.China on Friday warned of countermeasures, and added that a U.S. bill proposing to..