So did Jimmy Carter and Andrew Young
they undermined the "unity" transitional government of black Rhodesians under Bishop Muzorewa which had the support of Ian Smith and white Rhodesians. Carter and Young rejected a government without Robert Mugabe's marxist ZANU, who continued their guerrilla war until the could control the outcome of national voting. Once in control, Mugabe went on to slaughter his political opponents from the Ndebele minority.
In sum, they screwed over everyone in Rhodesia and Zimbabwe
Just as we should have supported Chief Buthelezi in South Africa, instead of Mandela.