Singapore is seeking to attract higher-calibre foreign workers under a new points-based visa system, as part of the government’s broader push to boost local employment while positioning itself as a global city, Manpower Minister Tan See Leng said.“What we are trying to do is to be able to differentiate the high talent, the really super skill sets talent that can come to our country to work to complement our existing workforce,” Tan said on Thursday.The city state last week announced one of the…