U.S. President Barack Obama vowed on Sunday, November 15, to step up efforts to eliminate Islamic State and prevent more attacks like those in Paris, while urging Russia's Vladimir Putin to focus on combating the jihadist group in Syria, Reuters reports.

A White House official said Obama and Putin agreed during a 35-minute meeting on the sidelines of a G20 summit in Turkey on the need for a political transition in Syria, saying events in Paris had made it all the more urgent.

Obama described Friday's killing of more than 120 people in Paris, claimed by the radical Sunni militant group, as an attack on the civilized world and said the United States would work with France to hunt down those responsible.

"We will redouble our efforts, working with other members of the coalition, to bring about a peaceful transition in Syria and to eliminate Daesh as a force that can create so much pain and suffering for people in Paris, in Ankara, and in other parts of the globe," he said, using the Arabic acronym for Islamic State.

Obama huddled with Putin during a working lunch and the two agreed on the need for a Syrian-led transition including UN-mediated talks, the White House official said.

Putin and Obama talked "extensively", Russian news agencies cited top Kremlin foreign policy adviser Yuri Ushakov as saying.