A summit of top world leaders was urged to fight rising protectionism after Trump's victory stoked fears that free trade is under threat.
Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates face regional divisions, but will struggle to find common ground.
The Eiffel Tower turned green Sunday for the opening of the Paris climate conference, marking the launch of an art project that will see "virtual trees" grow on the landmark to support reforestation.
US Vice President Joe Biden arrived in Zagreb for a Western Balkans summit, highlighting renewed interest from Washington in the fragile region as it deals with an unprecedented influx of refugees.
US President Barack Obama said he was optimistic an elusive deal to contain global warming could be forged at an upcoming crunch summit in Paris.
Philippine President Benigno Aquino promised to be the "perfect host" to all leaders attending a regional summit, but a long and lonely red carpet welcome walk for China's Xi Jinping betrayed their nations' icy ties.
European Commission President Jean-Claude Juncker firmly defended Sunday the EU's hotly-contested plan to redistribute refugees across Europe despite calls by Poland to scrap the scheme after the deadly attacks in Paris.
Russian President Vladimir Putin and US President Barack Obama shook hands and chatted in a six-second encounter at a summit in Turkey, breaking the ice for the first time since Moscow launched its air campaign in Syria.
EU leaders were considering holding a summit with Turkish President Recep Tayyip Erdogan later this month to seek his help in curbing migrant flows to Europe.
India's Prime Minister Narendra Modi called Thursday for a "comprehensive and concrete" agreement on climate change in December, as he addressed African leaders at a major summit in New Delhi.
European Union and Balkan leaders struggled Sunday to reduce tensions over how to tackle the migrant crisis as Slovenia warned the bloc will "start falling apart" if it fails to take concrete action within weeks.
European Commission chief Jean-Claude Juncker has called a mini-summit in Brussels to tackle the migrant crisis along the western Balkans route.
The United States and its former Cold War foe Cuba are discussing a joint maritime reserve in waters between their countries.
President of Kazakhstan Nursultan Nazarbayev took part in the UN Sustainable Development Summit for post-2015 agenda and Sustainable Development Goals.
The European Union has announced an emergency summit in Brussels next in a bid to find solutions to the continent's worst refugee crisis since World War II.
EU president Donald Tusk said he would consider requests by German Chancellor Angela Merkel and others for an emergency summit on migrants and decide later this week.
Terrorists from Central Asia, China, Russia and other countries use the territory of Afghanistan, said the President of Afghanistan Ashraf Ghani Ahmadzai.
According to Kazakhstan's President Nazarbayev, Shanghai spirit has become a symbol of new Eurasia.
Russian President Vladimir Putin welcomed the leaders of emerging powers for a summit Moscow hopes will show it not isolated despite the standoff with the West over Ukraine.
Russian President Vladimir Putin is to meet world leaders including China's Xi Jingping and India's Narendra Modi ahead of the start of a summit of the BRICS emerging economies.