Defensive stocks buoy FTSE 100 before U.S.-China trade deal

(Reuters) - London's main share index rose slightly on Wednesday, hours before the sealing of an initial U.S.-China trade deal, though sentiment was tempered when Washington said tariffs on Chinese goods would not be rolled back immediately.The FTSE 100 rose 0.3% on a third day of gains, supported by a host of so-called defensive stocks including pharmaceutical giants AstraZeneca and GlaxoSmithKline , which rose nearly 2%, and consumer goods companies. Investors tend to turn to these sectors..