? Biden said the "last thing" the Untied States wants is another ground war in the Middle East.

? Biden said that the Romney-Ryan pair, not proposing very different solutions to Syrian crisis.

? Ryan criticized the Obama administration for relying too much on UN in dealing with Syria crisis.

U.S. Vice President Joe Biden said Thursday in the vice-presidential debate that the "last thing" the Untied States wants is another ground war in the Middle East.

"The last thing America needs is to get in another ground war in the Middle East, requiring tens of thousands, if not well over 100,000 American forces," Biden said in the feisty debate held in Danville, Kentucky. "They are the facts."

He made the remarks while defending the Obama administration's resistance to send U.S. troops to topple the Syrian government.

Biden also said that the Romney-Ryan pair, who have accused Obama's strategy on Syria of not working, are not proposing very different solutions.

"All this loose talk of my friend, Governor Romney, and the congressman, about how we're going to do, we could do so much more in there, what more would they do other than put American boots on the ground?" he challenged.

In his rebuttal, Republican vice presidential candidate Paul Ryan criticized the Obama administration for relying too much on the United Nations in dealing with the Syria crisis, which he said has prolonged the conflict on the ground.

"We wouldn't be outsourcing our foreign policy to the United Nations giving Vladimir Putin veto power over our efforts to try and deal with this issue," he argued. "He vetoed three of them."

When pressed by Biden about what he would do differently, Ryan responded: "We would not be going through the UN in all of these things."