UN: Children used as human shields in Syria

The report also said that children were detained and tortured. “Most child victims of torture described being beaten, blindfolded, subjected to stress positions, whipped with heavy electrical cables, scarred by cigarette burns and, in one recorded case, subjected to electrical shock to the genitals,” the report said.

The U.N. report will add new fuel to international outrage over the conflict in Syria, where there have been several reports of massacres over the past few weeks.

The Obama administration wants to find a diplomatic solution to the crisis in Syria, and have repeatedly called for Assad to leave power to allow for a political transition in Syria.

The administration has remained opposed to arming the rebels or using airstrikes to establish safe havens for the opposition, something that some in Congress have called for.

Sens. John McCainJohn Sidney McCainRubio asks Army to kick out West Point grad with pro-communist posts The VA's woes cannot be pinned on any singular administration Overnight Defense: Mattis offers support for Iran deal | McCain blocks nominees over Afghanistan strategy | Trump, Tillerson spilt raises new questions about N. Korea policy MORE (R-Ariz.) and Joe Lieberman (I-Conn.) slammed the administration’s policy on Syria on the Senate floor last week, accusing officials of offering “empty words of scorn and condemnation.”

"When regimes are willing to commit any atrocity to stay in power, diplomacy cannot succeed until the military balance of power changes on the ground," McCain said.

Obama’s Republican opponent Mitt Romney has also weighed in, calling for the administration to arm the rebels in Syria.