"I think the resistance is bigger than the US military in Iraq. I think the resistance is more than 200,000 people," Iraqi intelligence service director General Mohamed Abdullah Shahwani said in an interview ahead of the January 30 elections.

Shahwani said the number includes at least 40,000 hardcore fighters but rises to more than 200,000 members counting part-time fighters and volunteers who provide rebels everything from intelligence and logistics to shelter.

The numbers far exceed any figure presented by the US military in Iraq, which has struggled to get a handle on the size of the resistance since toppling Saddam Hussein's regime in April 2003.