Live updates: Trump says US will investigate EU trade practices for 'unethical' fines on Google AP NewsTrump threatens EU with 'substantial TARIFF' for 'ROBBING' U.S. tech giants CNBCTrump threatens new tariffs against EU over Google fine PoliticoTrump threatens EU with ‘substantial' tariffs over fines of US tech giants The GuardianTrump says US to launch EU probe over
There isn't one "smoking gun" catalyst — but investors could be reacting to Chinese memory developments, Korean stock-market weakness and Intel's inability to sustain postearnings gains
