InThis how Vietnam manipulating the Dongs. The Dong and ringgit moved in tandem from 2014 to 2016 as against the USD. In 2017 ringgit (white line) appreciated but Vietnam Central Bank maintain the Dongs at same level..by early 2018 when USD strengthened, the ringgit and dongs moved down in tandem . By mid 2018, Trump has targeted Vietnam as currency manipulator and consequently the Viet let the Dongs float freely. By then you can see the Dongs has been undervalued than the ringgit.
