The finalized document is due to be released later on Sunday. US President Barack Obama, Vladimir Putin of Russia, China's President Xi Jinping and other leaders gathered at the Mediterranean resort of Antalya two days after the Paris attacks claimed by ISIS terrorists.
The Paris killings darkened the mood of the summit of the Group of 20 top world economies, with security and the Syrian conflict now eclipsing an economic agenda that will also deal with the spreading refugee crisis, climate change and tax avoidance.
Russia's Putin said that overcoming global terror was possible only "if all the international community unites its efforts". Putin is key to the gathering, which is taking place without French leader Francois Hollande who remains home to lead his shaken country in the aftermath of the attacks.