Iraqi Senior cleric Muqtada al-Sadr says the US-led coalition against the ISIL Takfiri group is aimed at disintegrating Iraq.
In a statement on Friday, Sadr said the United States has nothing but ill wishes for the Iraqi nation.
The Iraqi cleric called on the government in Baghdad and the army to step up efforts to liberate Nineveh Province from ISIL.
Sadr has been an outspoken critic of the ongoing US-led airstrikes in Iraq. The attacks have failed to halt militant advances in Iraq and Syria.
Since late September, the United States and its Arab allies have been conducting airstrikes against ISIL positions inside Syria, without any authorization from Damascus or a UN mandate. The US also started its airstrikes on Iraq in early August.
The ISIL militants made swift advances in much of northern and western Iraq over the summer, after capturing large swathes of territory in neighboring Syria.
They have carried out horrific acts of violence in the two countries, including public decapitations and crucifixions, against Iraqi communities such as Shias, Sunnis, Kurds and Christians.