Defense Secretary Jim Mattis was cautious Tuesday when asked whether the apparent election victory of Iraqi cleric Muqtada al-Sadr — the man responsible for so many U.S. troop deaths in Iraq ― angered him.

As of Tuesday, Sadr’s Shiite bloc had secured the most votes among the three top contenders, which included current Iraqi prime minister Haider al-Abadi, who came in third.

“The Iraqi people had an election, it’s a democratic process at a time when many people doubted that Iraq could take charge of themselves,” Mattis said. “So we will wait and see the results – the final results of the election. And we stand with the Iraqi people’s decisions.”

It was Iraq’s first major election since the fall of ISIS last year.

Sadr initially came to power shortly after U.S. forces entered Iraq and called for Americans to be driven from the country.

Mattis led the 1st Marine Division into Iraq in 2003, led I Marine Expeditionary Force as those Marines were on their third deployment to Anbar province in 2006 and then led U.S. Marine Forces Central Command in 2007.

Iraq's Shiite cleric Muqtada al-Sadr, center, speaks to his followers demonstrating at Tahrir Square in Baghdad, Iraq, Friday, July 15, 2016. (AP Photo/Hadi Mizban)
Iraq's Shiite cleric Muqtada al-Sadr, center, speaks to his followers demonstrating at Tahrir Square in Baghdad, Iraq, Friday, July 15, 2016. (AP Photo/Hadi Mizban)

In each post Mattis saw the costs to U.S. forces and Iraqi civilians of rising insurgency-driven and sectarian violence.

Sadr’s Mahdi Army began attacking U.S. and coalition forces in 2004 in Baghdad and Najaf and remained a significant threat through the U.S, surge in 2007-2008. The group was credited with fighting Islamic State forces in 2014.