By Adele Hampton - 08/07/12 01:25 PM EDT
Lieberman, a member of the Senate Armed Services Committee, argues that while the United States should support rebels fighting Assad, American soldiers should stay off the ground.
At the same time, Lieberman says, the United States would be wise to "leave open the option" for the use of American aircraft to disrupt Assad's airstrikes on his own people.
Lieberman suggested he is worried Assad will not heed the warnings of Russia and other nations not to use chemical weapons against his own people.
"This is a desperate man who gives every indication of holding on so long he may destroy his country," Lieberman said.