Military officials say missiles have the potential to hit targets in the southern-most parts of the peninsular
'I think the number and distance of the missiles lets them remind [South Korea] of what they are up against' senior researcher says
Missiles have a long enough range to hit anywhere in South Korea, Seoul officials say
Researchers have discovered how Mers spread at an alarming rate in Seoul last year, jumping from person to person until 36 were dead, 186 infected and thousands quarantined
Around 100 people were killed after coming into contact with the deadly humidifier disinfectant
South Korea reported the test and said it was on high alert for a nuclear test that it believed would happen imminently
Ms Park orders military to be on alert
Launch comes as the two Koreas trade threats amid Pyongyang's anger over annual South Korean-US military drills
'Japan is better if it protects itself against this maniac of North Korea'
'North Koreans may seem loyal to the government, but because they fear the government'
'Of great importance to both of us is North Korea’s pursuit of nuclear weapons, which threatens the security and stability of the region'
Kang Chol-hwa says he was hit and tortured - and forced to watch public executions
Operations in total involve about 17,000 US troops, along with 300,000 of their South Korean counterparts
State media reports the dictator successful test of re-entry ballistic missiles
South Korean grandmaster Lee Sedol is battling computer programme AlphaGo to test whether robots have advanced enough to out-smart humans at the board game
US and South Korean troops are practising how to storm beaches in their 'largest ever' joint military drill