Although still a member of the DA , he served as the South African Ambassador to Argentina under the ANC government from 2009 to 2012 .
He is the longest serving leader of the official opposition in parliament since the advent of democracy in 1994 .
Although still a member of the DA , leader served as the South African Ambassador to Argentina under the ANC government from 2009 to 2012 .
He is the longest serving leader of the official opposition in parliament since the advent of democracy in 1994 .