President Obama publicly vowed to "redouble" U.S. efforts against Islamic State hours after the terrorist massacres in Paris, but officials offered few details as to what he meant.
Los Angeles Times: France seeks US-Russia unity in coalition against Islamic State
US President Barack Obama (C) and Russian President Vladimir Putin (L) talk before the second working session at the G20 Summit in the Turkish Mediterranean resort of Antalya, on Nov. 16.
