Obama's Syria Moves Threaten Foreign Policy Legacy

President Obama balancing disparate interests in Syria.

 (Charles Dharapak/AP)

The president decision to lethally arm Syrian rebels could come to define his presidency.

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By ramping up involvement in the ongoing Syrian conflict, President Barack Obama risks involving the United States in yet another prolonged Middle East conflict and undermining the foreign policy legacy he has tried to create, experts say.

[POLL: Should Obama Do More in Syria?]

Obama campaigned on ending U.S. involvement in Iraq and Afghanistan and railed against the policies of President George W. Bush for being interventionist and irresponsible. He largely lived up to his rhetoric during his first term. But after proclaiming the use of chemical weapons a "red line" not to be crossed, Obama finds himself in a difficult position now that the administration has – somewhat belatedly – acknowledged they have been used in Syria.

"There needs to be consequences for a regime that uses chemical weapons," said Ben Rhodes, deputy national security adviser for strategic communications, during a press briefing Friday. The administration announced it would ramp up support for rebel forces seeking to overthrow the government of Syrian President Bashar al-Assad late Thursday, ahead of the upcoming G8 summit where European allies are sure to bring up the issue.

"This president understands that the way to wreck his presidency is to get actively involved in another war in the Middle East. That's why he's been so reluctant and that's why two years in, they are only now talking about providing light weapons," says Doug Bandow, senior fellow at the Cato Institute. "The problem is it's not at all clear that America getting involved will stop any of this."

[READ: U.S. Prepares Military Options for Syria as 20K Troops Bear Down on Aleppo]

The conflict is increasingly deadly, with the United Nations recently estimating the war has caused about 92,000 casualties.

Ilan Berman, vice president of the American Foreign Policy Council, says by waiting so long to insert itself, the U.S. has created some difficult challenges.

"It doesn't mean we shouldn't get involved, but waiting until now you really have to temper your expectations about how good the outcomes can be even when we do get involved," Berman says. "You're going to see [the administration] do just enough to satisfy the internationalist wing without doing too much and risking the ire of their constituency."

Domestically, public polling shows voters oppose involving the United States in another prolonged overseas war, but Michael Singh, managing director of the Washington Institute, a non profit focused on Middle East policy, says that's partially because Obama hasn't made a case for it.

"There has been some domestic pressure – obviously the polls are not in favor of the U.S. getting involved in Syria, but in part I think that's a reflection of the fact that President Obama has not made a strong public case for why this is important," he says.

[PHOTOS: Violence in Syria Escalates]

The move to take a stronger approach to Syria may hurt Democrats in the 2014 midterm election among war-weary voters, but only if it escalates further, says Bandow.

Despite the potential political consequences, the confluence of humanitarian concerns, the breach of the so-called red line and global political pressure to increase involvement forced Obama's hand, says Singh.

"They don't want to see Assad and Iran victorious in Syria because that would be a real regional coup for the Iranians and Hezbollah. At the same time, they also want to see the killing stop because as long as the conflict goes on, the threat of reverberations in the region is high," he says. "What they need to do to achieve any kind of victory for U.S. interests is to stop the conflicts and leave in place a government that is neither Iranian-allied nor jihadist dominated."

But, Singh adds, the announced action to provide light weapons won't get the job done.

"I don't think it's going to have a dramatic impact," he says. "My guess is this is at the margin. This is not enough to topple the Assad government."

[BROWSE: Political Cartoons on Syria]

Part of the seemingly slow-footed and haphazard approach to Syria could also be the result of a lack of leadership.