Iraqi security forces launched a new offensive against Islamic State insurgents in the Sunni Muslim heartland of Anbar on Wednesday, seeking to build on a victory over the jihadist group last week in the city of Tikrit.

Fighting began in the western province’s desert terrain as Prime Minister Haidar al-Abadi was touring Anbar, visiting Iraqi army units and pro-government Sunnis, his office said. Abadi was expected to address the nation from Anbar later in the day.

“Our next stand and battle will be from Anbar to liberate it entirely,” Abadi said in a post on his official Facebook page. “We will prevail in Anbar as we prevailed in Tikrit.” […]