US President Donald Trump meets other world leaders at Germany's G20 summit from Friday, with conflicts looming over climate, trade and other global issues both inside and outside the heavily-fortified venue.
Some 20,000 police will guard the heads of the Group of 20 big industrialised and emerging economies against anti-capitalist protesters who have greeted them with the combative slogan "G20 - Welcome to Hell".

US President Donald Trump meets other world leaders at Germany's G20 summit from Friday, with conflicts looming over climate, trade and other global issues both inside and outside the heavily-fortified venue.
Some 20,000 police will guard the heads of the Group of 20 big industrialised and emerging economies against anti-capitalist protesters who have greeted them with the combative slogan "G20 - Welcome to Hell".