The United States is urging the U.N. Security Council to condemn violence by all parties in Syria and express outrage at Syrian government airstrikes, especially this week's indiscriminate use of heavy weapons in Aleppo that killed more than 100 people.

A proposed council statement would express deep concern at the escalating level of violence in the Syrian conflict, including the use of SCUD missiles and "barrel bombs" in Aleppo.

The draft, obtained Wednesday by The Associated Press, would reiterate the council's call for greater access for humanitarian workers, and welcome the Jan. 22 peace conference in Geneva to try to end the Syrian conflict.

Council members have been deeply divided over Syria. The U.S. Mission said the statement will be adopted if there are no objections by Thursday morning.