#Sona2016 threatened by calls for Zuma to step down

Opposition parties including the EFF, DA, Cope and UDM are calling for the president's resignation.

President Jacob Zuma. Picture: GCIS.

CAPE TOWN - President Jacob Zuma will address a joint sitting of both house of Parliament tonight amid calls for him to do the honourable thing and resign.

Zuma is scheduled to deliver his State of the Nation Address at 7pm, but the Economic Freedom Fighters (EFF) has warned it will interrupt the speech if the president doesn't explain why he fired former finance minister Nhlanhla Nene.

Opposition parties including the EFF, the Democratic Alliance, Congress of the People and the United Democratic Movement are calling for the president's resignation.

Cope's Mosiuoa Lekota says Zuma breached his oath of office.

"Undermining the remedial action of the Public Protector first of all and he has now admitted through his lawyers at the Constitutional Court that he should have always respected the Constitution. By his own admission he shouldn't be addressing us a president."

But African National Congress spokesperson Moloto Mothapo says there is no reason for Zuma to step down.

"We are used to it as the president has been subjected to an annual motion of no confidence. It's something that is part of the Parliamentary discourse."

There may be fireworks in the Chamber tonight, should EFF MPs not back down on their threat to disrupt Zuma's speech.

LISTEN: Analysis on what Zuma's Sona will focus on.