Beijing: A volley of rogue missiles, the surprise despatch of a military radar, and by week's end, the downfall of a president.

A confluence of events has stoked tensions on the Korean Peninsula, and analysts are worried about what happens next.

The exit of disgraced South Korean president Park Geun-hye, after Friday's court ruling to uphold a decision by parliament to impeach her, leaves a vacuum at the centre of one of the globe's most dangerous flashpoints.

An increasingly reckless rogue nuclear state, North Korea, sits next door. As does an angry trading partner, China.