Premarket: Shares rise on China-U.S. trade hopes, greenback drops

European stock indexes opened on higher on Friday, helped by signs of progress in U.S.-China trade talks, while the dollar slipped to its lowest in more than three years. Global stock markets have rallied to record highs this week, as traders took confidence from a ceasefire between Iran and Israel and markets stepped up bets for U.S. rate cuts. A trade agreement between the U.S. and China on Thursday on how to expedite rare earth shipments to the U.S. was also seen by markets as a positive sign, amid efforts to end the tariff war between the world's two biggest…