U.S. weighs Iraq airstrikes, Obama says he won't send combat troops

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WASHINGTON (CNN) -- No troops to Iraq, but other options are being considered.

That was President Barack Obama's message Friday in response to the lightning advance by Sunni militant fighters in Iraq that could threaten the government of Shiite Prime Minister Nuri al-Maliki.

In a statement delivered from the White House South Lawn, Obama said the United States "will not be sending U.S. troops back into combat in Iraq," but that he would be reviewing a range of other options in coming days.

"This is not going to happen overnight," the President said, adding that unless Iraq fixes its internal political problems, short-term military help from the United States won't make much difference.

Critics blame Obama for Iraq crisis

Pressure for the United States to provide military support to Iraq's struggling government has increased, with conservative Republicans blaming Obama for the crisis by pulling out U.S. troops in 2011 to create a security vacuum.

GOP critics also say that Obama's unwillingness to provide significant military backing to opposition forces in Syria's civil war has contributed to the ability of the militant Islamic State in Iraq and Syria, or ISIS, attack in Iraq.

Taking questions from reporters after his statement, Obama acknowledged that the Syrian civil war has been spilling over into Iraq "for some time now," adding that the regional conflict "is going to be a long-term problem" and that the Iraqi government now sought U.S. help after previously resisting offers.

Obama also noted that Iraqi troops weren't "willing to stand and fight" against the militant attackers, calling it a "problem in terms of morale" and commitment that reflected the political divisions in the country.

Now, he said, the violence could worsen if Sunni militants sweeping across Iraq take over sacred Shia sites.

Earlier, Secretary of State John Kerry mentioned some initial U.S. moves to back the Maliki government, but stopped short of spelling out further steps that could include air strikes intended to slow the progress of militants and help the Iraqi military regain its equilibrium.

"We have already taken some immediate steps, including providing enhanced aerial surveillance support to assist the Iraqis in this fight," Kerry said at a London conference. "We have also ramped up shipments of military aid to Iraq since the beginning of the year."

Meanwhile, the United States plans to move the aircraft carrier George H.W. Bush into the Persian Gulf in coming hours to provide Obama with options for possible airstrikes, a U.S. official told CNN on Friday, adding the move did not mean a final decision had been made.

No U.S. ground troops for now While Obama said Thursday that his national security team was looking at "all options," White House spokesman Jay Carney told reporters then that ground troops weren't being contemplated for now. The President re-emphasized that point on Friday.

ISIS fighters have seized Iraq's second-largest city, Mosul, as part of an advance toward Baghdad that gave them control of large parts of the country's northern area.

Calls for American air strikes have increased in Washington, but U.S. military planners trying to find a way to help Iraq fend off the militant fighters are worried that such attacks could prove futile, several officials told CNN.

Among other complications, U.S. officials don't have good intelligence about where militants are. Even if they did, the militants don't have the type of targets -- command and control centers, air defense sites, military bases -- that lend themselves to aerial attacks, the officials said on condition of not being identified.

Republican Sen. John McCain of Arizona, a war veteran and critic of Obama administration policy in Iraq, told CNN on Friday that air strikes "are certainly something that should be considered, but I would point out that air strikes are not easy."

Air strikes "not easy"

"You just don't say, 'hey, let's go hit something,'" said McCain, who lost to Obama in the 2008 presidential election. "It requires coordination, it requires intelligence; it requires a whole lot of things."

He repeated his call for Obama to bring back retired Gen. David Petraeus and other leaders from the Iraq war to develop a strategy.

McCain has called for Obama to fire his national security team, saying the decision to withdraw all U.S. troops from Iraq created a predictable vacuum that led to the current crisis.

To McCain, a residual force of U.S. troops should have remained in Iraq to provide stability, "the same kind of residual force that we have now in Bosnia, that we have in Germany, we have in Japan."

"That doesn't mean we're in combat. It means we are there as a stabilizing force," he said adding that the ISIS advance represents "an existential threat" to America. He linked the Iraq situation to the Obama administration's reluctance to strongly support opposition forces in Syria's civil war, a policy he called "one of the causative factors" for the Iraq crisis.

Kerry, however, cited differences in U.S. relations and obligations with Iraq compared to Syria. The Iraq war that began with the 2003 invasion to oust Saddam Hussein eventually led to elections that brought Maliki to power, followed by the 2011 departure of U.S. forces.

U.S. deeply involved in Iraq

"In Iraq there is a government that we have been deeply involved in, that we support, that we have a military relationship with, that we have an ongoing memorandum of understanding regarding the military relationship which has invited us, asked us for help," he said.

One U.S. official told CNN that short of sending ground troops, options under consideration included increasing U.S. surveillance flights over ISIS areas and potential airstrikes.

According to the officials who spoke to CNN, targeting problems include:

• The U.S. lacks credible, specific intelligence about where ISIS fighters are;

• Using drones to strike fighters moving on vehicles still requires very specific intelligence to assure who is being struck. Moreover, they say, drone strikes can kill individuals, but they don't change the military calculation or balance of power on the ground;

• There's no one on the ground, such as Air Force tactical air controllers, to call in precise airstrikes;

• ISIS doesn't have fixed positions such as command and control centers, air defense sites, military bases and radar facilities that could be hit to degrade the group's military capability; and,

• Fighters may be spread out inside population centers, which means airstrikes could risk civilian casualties and property destruction at the hands of the U.S. military.

Lethal military aid for Iraq

A Defense Department official says that about $15 billion in equipment, training and other services already have gone to Iraq.

Carney reeled off some of the many items involved: millions of rounds of small arms fire, thousands of rounds of tank ammunition, hundreds of Hellfire missiles, grenades, assault rifles, helicopters and much more.

That tally doesn't include an additional $1 billion in arms -- including up to 200 Humvees -- that are now in a 30-day review period in Congress.

"Iraq is going to need more help from us, and it's going to need more help from the international community," Obama said Thursday.

James Jeffrey, the U.S. Ambassador to Iraq from 2010 to 2012 who is now a fellow at the Washington Institute for Near East Policy, characterized Iraq's military as "ill-trained, badly led and not particularly competent."

"They clearly cannot fire and maneuver," said Jeffrey, a U.S. Army veteran.

In addition, militants have been able to pick up weaponry, vehicles and other goods on its sweep of Iraq -- some of it supplied by the United States.

Both Kerry and McCain said a key to progress in Iraq was for Maliki, a Shiite, to be more inclusive, with Kerry citing a "persistent divisiveness and gridlock with respect to some of the unresolved political issues."

McCain was more blunt, saying Maliki "has got to reconcile, and if he can't do that, then I think he should be replaced by somebody that can."

CNN's Michael Pearson and Greg Botelho contributed to this report.

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