President Obama said there were difficult days ahead

US Republicans have broadly welcomed President Barack Obama's plan to withdraw most troops from Iraq by 2010.

However, they suggested he should give credit to his predecessor for stability brought by the "surge" strategy of pouring extra troops into Iraq.

House Republican Minority Leader John Boehner described the plan as responsible while remaining flexible.

Iraqi PM Nouri al-Maliki said his forces were capable of controlling security in Iraq after US troops leave.

President Obama announced that the US "combat mission" would officially end by August 2010.

'Responsible approach'

However, up to 50,000 of 142,000 troops now there will stay until the end of 2011 to advise Iraqi forces and protect US interests, he said.

Mr Obama praised the progress on security made but warned: "Iraq is not yet secure, and there will be difficult days ahead."

A London-based spokesman for Mr Maliki's party, Zuhair al-Nahar, told the BBC: "The Iraqi security forces have proved their efficiency and have proved their capability.

"In many provinces, for example in the south, you hardly see any presence of American troops and in many areas of Baghdad the same applies.

"So the Iraqi security forces have shown that they are capable of controlling the security situation."

Among Republican support, House Republican Minority Leader John Boehner said Mr Obama had outlined "a responsible approach that retains the flexibility to reconsider troop levels and to respond to changes in the security environment".

Republican Senator John McCain, Mr Obama's former rival presidential candidate, said he supported the plan.

He said it was "one that can keep us on the right path in Iraq," the Associated Press news agency reported.

He told senators: "Let us have no crisis of confidence now.

"Instead, let us welcome home our fighting men and women - not just thanking them for serving in Iraq, but congratulating them on bringing us to victory there."

However, Democratic congressman Dennis Kucinich questioned keeping some troops in Iraq while withdrawing others.

"You can't be in and out at the same time," he said.

Some Democrats are concerned that the timetable falls short of Mr Obama's election pledges on troop withdrawal.

Mr Obama had said previously that he would completely pull out troops within 16 months of taking the top job in January 2009.

In his address at Camp Lejeune, a Marine Corps base in North Carolina, Mr Obama said his national security team had drawn up a "new strategy" for US involvement in Iraq.

The strategy recognised that the long-term solution in Iraq must be political and that the most important decisions about its future must now be made by Iraqis, he said.

I asked Robert Gates, the defence secretary, whether he could look the outside world in the eye and say 'America won!'

North America editor Justin Webb

Read Justin's thoughts in full

Senate Majority Leader Harry Reid described Mr Obama's plan as "sound and measured" but said the US "must keep in Iraq only those forces necessary for the security of our remaining troops and the Iraqi people".

House Speaker Nancy Pelosi said the plan was "good news" because it signalled an end to the war, but called for clearly-defined missions for the remaining troops.

REACTION TO BARACK OBAMA'S IRAQ PLAN

Marc Ambinder, Atlantic Monthly

Steve Benen, Washington Monthly

Spencer Ackerman, Attackerman, Firedoglake.com

Tom Donnelly, The Weekly Standard