Belek, Turkey: The Group of 20 leading economies (G20) said on Monday the rise in terrorism undermined international peace and security and endangered efforts to strengthen the global economy.
In a statement issued after a meeting in the sea resort of Belek in the Antalya province of Turkey, the leaders of the world's 20 biggest economies stressed, however, that terrorism should not be associated with any religion, nationality or ethnic group.
The statement, confirming a draft seen by Reuters on Sunday, said the G20 would work together to suppress and prevent terrorist acts and cut off financing for those who commit them.
The 20 leading countries also pledged to exchange operational information and tighten border controls as well as global aviation security.
G20 vows more intelligence sharing; divisions remain on Syria
World leaders promised to tighten border controls, step up intelligence sharing and crack down on terrorist financing at a summit in Turkey on Monday, but there was little sign of a dramatic shift in strategy against Islamic State in Syria.
The G20 summit in Turkey's coastal province of Antalya has been dominated by Friday's attacks across Paris, which killed 129 people at a concert, restaurants and a soccer stadium and underlined the threat posed by the radical jihadist group far beyond its strongholds in Syria and Iraq.
The two-day summit brought together leaders including U.S. President Barack Obama and Russia's Vladimir Putin just 500 km (310 miles) from Syria, whose 4-1/2-year conflict has transformed Islamic State into a global security threat and spawned Europe's largest migration crisis since World War Two.
"The horrific attacks in Paris on Friday night, so soon after the Russian airline disaster and following on from the Ankara bombings and the attacks in Tunisia and Lebanon, they underline the threat we all face," British Prime Minister David Cameron told a news conference.
"We have agreed to take further important steps to cut off the financing that terrorists rely on, to counter the extremist ideology of the terrorist propaganda and to better protect ourselves from the threat of foreign fighters by sharing intelligence and stopping them from traveling."
Concerned about the "acute and growing flow of foreign terrorist fighters", G20 leaders said in a statement they had agreed to step up border controls and aviation security. They condemned the Paris attacks as "heinous" and said they remained committed to tackling terrorist financing.
French warplanes pounded positions held by Islamic State, also known as Daesh, in Syria on Sunday. Foreign Minister Laurent Fabius described it as an act of self-defense following the Paris attacks.
"France has always said that given the manner in which it has been threatened, not only threatened but attacked, by Daesh, it is completely normal that it takes the initiative and as an act of legitimate defense, takes action," he told reporters.