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The Democratic Alliance has asked President Jacob Zuma to explain the over R200m upgrade to his private Nkandla residence in KwaZulu-Natal.
Party leader Helen Zille said the president must also explain what personal accountability he takes for the scandal, and who else in his government will be held accountable.
Zille said the president and his government had been dodging questions on Nkandla.
On Wednesday, Parliament blocked a question submitted by DA Parliamentary Leader Lindiwe Mazibuko on Nkandla.