TURNBERRY, Scotland, July 27 (Reuters) - The U.S. struck a framework trade agreement with the European Union on Sunday, imposing a 15% import tariff on most EU goods - half the threatened rate - and averting a bigger trade war between the two allies that account for almost a third of global trade.

US stocks were also set to open higher, but the euro weakened as investors digested the early details of a trade deal that left elevated tariffs on most EU goods. The terms of the deal sparked a backlash from some European politicians and industries,