Warren, Buttigieg scrap puts Democratic divide on display

President Donald Trump smiles during a luncheon with members of the United Nations Security Council in the Cabinet Room at the White House on Thursday. (AP Photo/Andrew Harnik)

Democratic presidential candidate South Bend, Ind., Mayor Pete Buttigieg speaks during a campaign event Thursday, Dec. 5, 2019, at New England College in Henniker, N.H. (AP Photo/ Cheryl Senter)

Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., holds up two fingers as she speaks during a campaign stop, Saturday, Nov. 23, 2019, in Manchester, N.H. (AP Photo/Mary Schwalm)

WASHINGTON — Elizabeth Warren has spent weeks absorbing attacks from moderate rivals looking to blunt her surging campaign for the Democratic presidential nomination. Now, as the Massachusetts senator risks losing momentum, she’s starting to hit back.