US
The meeting between the 20 leaders is expected to be one of the most fractious in years
Amid a nuclear deadlock between Pyongyang and Washington
Becomes the first Chinese president to visit North Korea in 14 years
The two leaders agree to meet after they spoke on the phone weeks after negotiations broke down
As more than 25,000 police officers will reportedly be mobilised to provide security during the summit meetings
After Trump's decision to strip New Delhi of its preferential trade status earlier this month
Trade war escalation has wiped out more than $1.5tr in investments worldwide
US president says the meeting will probably be very 'fruitful'
World leaders in the Argentinian capital of Buenos Aires
Saudi Arabia says 21 people are in custody and vows to keep investigating