Pressed for a strong answer to the Islamic State group's attacks in Paris, the world's top industrial and developing nations are set to outline their coordinated response to what President Barack Obama has described as an "attack on the civilized world."

Numerous meetings about next steps in Syria and the Islamic State campaign are being scheduled Monday on the sidelines of the summit at the Turkish seaside resort of Antalya.

Obama is to huddle with European leaders from France, Britain, Germany and Italy. French President Francois Hollande skipped the summit to stay home and deal with the aftermath of the attacks, but Foreign Minister Laurent Fabius planned to attend the meeting with the U.S. president.

Obama and Russian President Vladimir Putin discussed the situation in a 35-minute meeting Sunday.