Futures data indicate a negative open in Europe due to uncertainty over U.S.-Iran peace talks. The Pan-European Stoxx 50 futures were down 0.6% shortly before 7 a.m. in London, with futures for London's FTSE 100 and Paris's CAC 40 falling 0.8%. Meanwhile, U.K. retail sales, French consumer confidence figures, and a German Ifo Business Climate update are also anticipated.