Heads of state invited to climate talks in Paris starting on Nov. 30 have confirmed they will attend even after the Nov. 13 attacks by Islamic State militants that killed 130 people, a French presidency source said.

“None of the heads of state or government has cancelled,” the source told Reuters, adding that 138 leaders were expected on the opening day of the U.N. Climate Change conference that runs until Dec. 11.

World leaders will discuss plans to curb greenhouse gas emissions and prevent global temperatures rising more than 2 degrees Celsius above pre-industrial levels.