At least 23 Iraqi troops and pro-government fighters have been killed in clashes with militants in the western province of Anbar, officials say.
A suicide bombing at a mosque in al-Jubba killed 10 anti-jihadist fighters. Militants then attacked police and army positions, killing 13, officials said.
A further 28 Iraqi troops were wounded, while militant casualties are unknown.
The incidents took place near the Ain al-Asad airbase, where US forces are currently training Iraq’s military.
The attacks were carried out on Tuesday near the town of al-Baghdadi, which is 110 miles (180 km) north-west of Baghdad.