A total 147 heads of state and government have confirmed their attendance of the climate summit due to start in Paris next week, the French government said Tuesday.
The conference, from November 30 to December 11, is tasked with signing the first-ever truly universal pact to curb global warming, and opens just two weeks after jihadists killed 130 people in the French capital.
AFP quoted an unnamed French Foreign Ministry official as saying that "147 heads of state and government are expected" at the highly-anticipated Conference of Parties.
This would make it one of the biggest gatherings ever of world leaders outside the UN General Assembly in New York.
France has insisted it will not "give in" to violence by postponing a summit which must produce a deal committing all the world's nations to climate action starting in 2020.
Gunmen and suicide bombers killed 130 people out for dinner, drinks and a concert on the night of November 13, prompting the authorities to cancel two mass rallies that had been organized to coincide with the summit.
The conference itself will gather some 40,000 delegates, journalists, observers and exhibitors.
The meeting's goal is to produce a pact that can limit average global warming to two degrees Celsius over pre-Industrial Revolution levels.
About 170 countries have already filed voluntary carbon-curbing pledges to underpin the future pact, but scientists say the aggregate effect falls far short and Earth is on course for warming of about 3° C, or more.
