Iraqi Prime Minister Ali al-Zaidi confirmed Thursday the complete and final withdrawal of U.S-led coalition forces from Iraq, declaring the full realization of national sovereignty.

In a national address, al-Zaidi said October 1 marks the beginning of a "new chapter in Iraq's journey". He noted that the date also signals the launch of a government initiative to tackle weapons existing outside state authority under a structured roadmap concluding no later than June 30, 2027.

"The government will work toward the complete disarmament of all non-Iraqi armed groups present on Iraqi territory, in a manner that safeguards the country's security and stability and ensures control of its borders," al-Zaidi said.

His remarks came one day after he formally announced the termination of the U.S.-led coalition's mission to combat the Islamic State (IS) in Iraq.

Meanwhile, the Islamic Resistance in Iraq-an umbrella coalition of local armed factions-rejected demands to surrender its weaponry on Wednesday, stating it is not bound by any schedule or agreement arranged by any political or governmental body.

The U.S-led coalition was originally established in 2014 to support Iraqi forces after IS militants captured vast territories across Iraq and Syria. With coalition support, Iraqi forces dismantled the extremist group's territorial hold in 2017, though coalition operations continued against remaining militant pockets.