Suicide blasts and several shootings across Iraq have killed at least 41 people.
Police say a suicide bomber in Tal Afar, north of Baghdad, killed at least 20 people and wounded 17 others. In Ramadi, in western Anbar province, a suicide car bomb killed 13 people. Several more bodies showing signs of torture were found in Baghdad.
Meanwhile, at the United Nations, Kofi Annan said Iraq is in grave danger of falling into civil war if the current violence persists.
The U.N. chief said the Iraqi people have demonstrated their commitment to a peaceful and democratic country, but Iraq is still dominated by sectarian violence and civil strife.
Mr. Annan called for Iraq's neighbors and other nations to support the U.N.'s "International Compact with Iraq" aimed at boosting the country's economy.
In Iraq's restive Anbar province, tribal leaders have recently banded together to fight the insurgency.
The leaders met last week to establish a force of at least 20 thousand men, and have asked the Iraqi government for weapons and support.
Also Monday, the Iraqi army assumed operational control of the military division responsible for security in central Salahuddin province.
It is the second time since early September that an Iraqi division has assumed control of a province from the U.S.-led coalition.