HANOI, Jan 27: Vietnam's top communist leader Nguyen Phu Trong was re-elected on Wednesday in a victory for the party's old guard which some fear could slow crucial economic reforms in the fast-growing country. Factional fighting overshadowed a week of closed-door talks at the five-yearly Communist Party Congress. But Trong, 72, retained his position while his rival -- reformist Prime Minister Nguyen Tan Dung -- was pushed from power.     ?AFP