Though announcement of US national security adviser's departure came abruptly, the divide between him and Trump had been widening for months

Hardliner influences Trump's position on Iran nuclear deal and United Nations, but two later seem divided over North Korea and talks with Taliban

Missiles fly about 330 kilometers before splashing down in sea off country's east coast; South says it is monitoring for any further launches

Streak of weapons display by Pyongyang apparently aimed at pressuring Washington and Seoul over joint military drills, slow nuclear talks

After fifth launch in two weeks, US president says Pyongyang offered a 'small apology' for missile tests, wants to resume talks once US-South Korea war games end

Leader reportedly believes rocket tests send an appropriate level of warning over joint military exercises that began on Monday

Latest test comes while UN Security Council meets over Wednesday's missile launches, after Pyongyang angered by US-South Korea military drill

Pyongyang gloats that launch of new tactical guided weapon 'must have given uneasiness and agony to some targeted forces'

Move complicates efforts to resume stalled nuclear talks with Washington and signals anger in Pyongyang over planned US-South Korea joint military exercises

Pyongyang says it may stop abiding by moratorium it agreed on with America to protest US-South Korea military drills