Al Qaeda in Iraq vowed on Sunday to carry out attacks to "shake the enemy" after the killing of its leader Abu Musab al-Zarqawi, heightening fears his death will bring no respite from carnage.
The group said in an Internet statement its leading body met after Zarqawi's death to discuss strategy and renew a pledge to al Qaeda leader Osama bin Laden.
"We plan large-scaled operations that will shake the enemy and rob them of sleep, in co-ordination with the other factions of the Mujahideen Council," the statement said.
Iraqi leaders and their closest ally US President George W. Bush hailed Zarqawi's death in a US air strike on Wednesday as a major victory in the battle against "terrorism".
But no one expects violence to ease dramatically. Sunni Arab insurgents and al Qaeda militants are waging a campaign of bombings and shootings to topple the Shi'ite-led government backed by Washington.
The commander of US troops in Iraq predicted in an interview with CBS television on Sunday a gradual reduction of the 131,000 US forces there if the new Iraqi unity government held together and the Iraqi army improved.
Army General George Casey said a growing number of Iraqi army units were capable of leading the battle against the insurgency with US logistical support and he expected almost all of them to develop the capability by the end of this year.
"As long as the Iraqi security forces continue to progress and as long as this national unity government continues to operate that way and move the country forward, I think we're to be able to see continued gradual reduction of coalition forces over the coming months and into next year," Casey said.
In more of the violence seen daily in Iraq, insurgents killed three Iraqi soldiers during an attack on a desert Iraqi army base in rebellious Anbar province on Sunday, police said.
Police found the beheaded body of an Iraqi soldier in a river near Tikrit and a roadside bomb seriously wounded a senior police officer in northern Baghdad. A policeman driving the car was killed and another wounded in the attack.
A car bomb killed four people and wounded nine in Baghdad.
RECONCILIATION HOPES:
New Prime Minister Nuri al-Maliki hopes his national unity government of Shi'ites, Kurds and Arab Sunnis will end the militant attacks and tackle sectarian violence that has pushed the country close to civil war.
He announced last week that more than 2,000 detainees would be released from US military and Iraqi prisons to try to help promote national reconciliation. A second group of prisoners was freed on Sunday after nearly 600 were released last week.