HONG KONG, Aug 17 (Reuters) - China"s top legislature will discuss on Friday the possible extension to Hong Kong of an anti-sanctions law, local media TVB News quoted National People"s Congress Standing Committee delegate Tam Yiu-chung as saying. Earlier, the city"s leader Carrie Lam said she did not have an explicit timetable for the implementation in Hong Kong of a mainland Chinese law that retaliates against foreign sanctions. read more