The expulsion of South Africa's ambassador to the United States highlights "diplomatic bullying" by the new U.S. administration, which should be opposed by all African nations, said a South African political expert.

The State Department says South Africa’s ambassador to the United States, who was declared “persona non grata” last week, has until Friday to leave the country. After Secretary of State Marco Rubio determined that Ambassador Ebrahim Rasool was no longer welcome in the U.

Remarks by South Africa's ambassador to the United States about President Donald Trump were "unacceptable," a State Department spokesperson told reporters on Monday after Washington last week made the decision to expel the envoy.