A specialist trader works on the floor at the New York Stock Exchange (NYSE) in New York City, U.S., Sept. 15, 2025.LONDON — European stocks are expected to open in mixed territory on Tuesday as investors keep an eye on U.S. President Donald Trump's trade tariffs and more political deadlock in the U.S.The U.K.'s FTSE and France's CAC 40 indexes are expected to open a touch lower on Tuesday morning, while Germany's DAX is expected to open up 0.4%, and Italy's FTSE MIB 0.13% higher, according to data from IG. ...