Washington’s Arab allies, disappointed with Syria peace talks, have agreed to provide rebels there with more sophisticated weaponry, including shoulder-fired missiles that can take down jets, according to Western and Arab diplomats and opposition figures.

Saudi Arabia has offered to give the opposition for the first time Chinese man-portable air defense systems, or Manpads, and antitank guided missiles from Russia, according to an Arab diplomat and several opposition figures with knowledge of the efforts. Saudi officials couldn’t be reached to comment.

The U.S. has long opposed arming rebels with antiaircraft missiles for fear they could fall into the hands of extremists who might use them against the West or commercial airlines. The Saudis have held off supplying them in the past because of U.S. opposition. A senior Obama administration official said Friday that the U.S. objection remains the same. “There hasn’t been a change internally on our view,” the official said.