Turnbull has urged G-20 leaders to take a strong stand against terrorists

Security, trade and climate change have so far dominated the Group of 20 nations summit in the German City of Hamburg. The event also included the highly anticipated face-to-face meeting between U-S President Donald Trump and Russian President Vladimir Putin. Meetings were held against a backdrop of violent protests on the city streets.

Firefighters extinguish the flames of a burning car during riots at the G20 summit in Hamburg, Germany Source: AAP