The two Koreas had initially agreed to hold their first high-level talks in six years in Seoul yesterday and today this week, but they were called off at the last minute following a dispute over protocol.
The talks initiative had been seen as a step forward after months of soaring military tensions, but its collapse has instead resulted in a sizeable backwards stride.
Even the one positive development -- the restoration of an inter-government hotline -- seemed in doubt, with the North refusing to answer calls from the South since yesterday morning.
"It only sought to create an obstacle to the talks, delay and then torpedo them," he said in a statement carried by the official Korean Central News Agency, accusing the South of "arrogant obstructions and deliberate disturbance".
"This impolite and immoral provocative behavior made us think once again whether it will be possible to properly discuss matters or improve relations even if official talks are opened in the future," the spokesman said.
The final nail in the coffin was a dispute over who would represent each side, with the North arguing that the South's nomination of a vice minister as its chief delegate was an insult.
When Seoul refused to upgrade to a cabinet minister, the North cancelled the dispatch of its delegation.
South Korea insisted its vice minister was commensurate in rank to the North's chief delegate and said Pyongyang had to accept international diplomatic norms.
Park, who took office in February, has pushed a "trust-building" policy with the North, which offers engagement but no concessions without reciprocity.
