G20 leaders gather along the Mediterranean to tackle the world's most vexing problems - none looms larger than Syria.

PM Narendra Modi arrives in Turkey for G20 summit

Prime Minister Narendra Modi at the G20 Turkey 2015

Narendra Modi at the G20 Turkey 2015

President Recep Tayyip Erdogan shakes hands with Saudi King Salman bin Abdul Aziz Al Saud

Prime Minister Narendra Modi being welcomed by Turkish children on his arrival at Antalya airport in Turkey 

Prime Minister Narendra Modi being welcomed by Turkish children

Prime Minister Narendra Modi with Russian President Vladimir Putin, Brazilian President Dilma Rousseff, Chinese President Xi Jinping and South African President Jacob Zuma posing for a group photo before the BRICS meeting in Antalya, Turkey 

Prime Minister Narendra Modi with Russian President Vladimir Putin, Brazilian President Dilma Rousseff, Chinese President Xi Jinping and South African President Jacob Zuma

Prime Minister Narendra Modi being welcomed by the Turkish President Recep Tayyip Erdogan, at the G20 Turkey

Narendra Modi being welcomed by the Turkish President Recep Tayyip Erdogan

Prime Minister Narendra Modi shakes hand with Russian President Vladimir Putin before BRICS meeting in Antalya

Prime Minister Narendra Modi shakes hand with Russian President Vladimir Putin 

Prime Minister Narendra Modi shakes hand with Russian President Vladimir Putin before BRICS meeting in Antalya, Turkey

Prime Minister Narendra Modi with US President Barack Obama during the G-20 group photo at the G20 Turkey 2015, in Antalya

Prime Minister Narendra Modi with US President Barack Obama during the G-20 group photo

World leaders pose for a family photo at the G-20 summit in Antalya, Turkey