Susan Walsh, Associated Press
President Barack Obama, left, talks with RussiaÍs President Vladimir Putin, right, as they arrive for a group photo with other leaders for the G-20 Summit in Antalya, Turkey, Sunday, Nov. 15, 2015. Obama is attending the G-20 Summit while on a nine-day foreign trip that also includes stops in the Philippines and Malaysia for other global security and economic summits.

ANTALYA, Turkey — President Barack Obama and Russian President Vladimir Putin have held an informal meeting on the sidelines of the Group of 20 economic summit in Turkey.

The two leaders chatted in a foursome with Obama's national security adviser Susan Rice and a Russian aide. Their meeting was visible on a television feed provided by the summit's host country of Turkey, but their conversation couldn't be heard. Reporters weren't allowed in for the meeting, which took place during a working lunch for leaders attending the summit.

Obama and Putin both leaned in close to each other as they talked, with Obama gesturing expressively with his hands.

The huddle comes as the U.S., Russia and other countries pursue a new diplomatic plan to try to end Syria's civil war.