Early morning attacks across Baghdad kill 22 (AP)

Fiery charges: Romney, Santorum assail each other (AP)

Poll: Obama benefitting from improving economy (AP)

Shelling kills 2 Western journalists in Syria (AP)

Obama administration seeks online privacy rules (AP)

Teen arrested in flight ruckus sang of bin Laden (AP)

FACT CHECK: Errant claims on auto bailout, taxes (AP)

Study: Colonoscopy cuts colon cancer death risk (AP)

Palin aides lash out at HBO's 'Game Change' (AP)

Man's childhood comic collection fetches $3.5M (AP)

Santorum takes heavy fire in Arizona Republican debate (Reuters)

Obama urges corporate tax cut, closing loopholes (Reuters)

Taliban urge Afghans to kill "invaders" after Koran burnings (Reuters)

Iran talks failure sparks confrontation fears (Reuters)

Assad forces renew barrage on Syria's Homs (Reuters)

Fitch downgrades Greece on debt swap plan (Reuters)

Analysis: Can U.S. economy withstand gasoline price curse? (Reuters)

Congress members threatened with biological attack (Reuters)

Could Rick Santorum super PAC do more harm than good? (The Christian Science Monitor)

Stolen Valor Act at Supreme Court: Is lying about being a hero a right? (The Christian Science Monitor)