Donald Trump has embarked on a tour of Asia this week trying to rally regional support for curbing North Korea's nuclear weapons programme.
US President Donald Trump arrived in China on Wednesday seeking help to rein in North Korea after warning the North's leader that the nuclear weapons he is developing "are not making you safer, they are putting your regime in grave danger."
Rodrigo Duterte said he hoped that Japan, the United States, South Korea and China would consider sending a representative to sit down with Kim to avoid a nuclear war.
Vladimir Putin's comments on North Korea appeared to draw the lines for a clash at the United Nations pitting Moscow and Beijing against Washington and its allies.
In a city obliterated by a US atom bomb more than 70 years ago, Japan kicked off a gathering of foreign ministers from the Group of Seven (G7) advanced economies with a call to end nuclear weapons.