The European Sanctions Blog gave a timely reminder on 27th November that the new Zimbabwe president remains subject to US sanctions, although the EU sanctions were lifted on 20th February 2016. Coincidentally, the author of that blog also appeared for Mnangagwa and others in their attempt to have EU measures against them lifted. See the OFAC Notice that includes the entry relating to Mnangagwa –
https://www.treasury.gov/resource-center/sanctions/OFAC-Enforcement/pages/20051123.aspx