US
Xi will hope he is greeted by Trump the gracious host rather than the rhetorical bomb thrower
Pyongyang is barred under UN resolutions from carrying out ballistic missile launches
While at the United Nations, Tillerson may meet with UN Secretary-General Antonio Guterres
The US Treasury hit 11 North Korean business representatives and an industrial firm with sanctions last week
Since taking office, Trump has left open the possibility of military action against North Korea
Another blast would be a fresh challenge for new US President Donald Trump
Pyongyang insists that it needs nuclear weapons for self-defence against "hostile enemies"
The killing has triggered a bitter row between Malaysia and North Korea
Rocket engines are easily re-purposed for use in missiles
The move that could terminate Ankara's bid to join the European Union