US
UN mulls additional sanctions as isolated state plans additional missile tests
Asian markets slide along with S Korean wins currency, while haven yen rallied as news ramps up international tensions
North Korea on Sunday triggered global alarm with by far its most powerful nuclear blast to date
Pyongyang on Sunday detonated what it claimed was a miniaturised hydrogen bomb
Trump said US was considering 'stopping all trade with any country doing business with North Korea'
Foreign Office calls for collective efforts to end global nuclear arms race
Trump last month threatened North Korea with fire and fury if it continued to threaten the US
Donald Trump describes North Korea's actions as "dangerous" to the US
The North described the test of what it called a hydrogen bomb as a "perfect success"
The apparent test came just hours after the country claimed to have developed a hydrogen bomb