Explained: Why North Korea's Kim Is Preparing For War On South Korea

After years of worsening ties, Pyongyang made it official this week: declaring Seoul its main enemy.

North Korean leader Kim Jong Un has declared the South his country's "principal enemy", jettisoned agencies dedicated to reunification and outreach, and threatened war over "even 0.001 mm" of territorial infringement.

But is the fiery rhetoric a sign of a real shift? AFP takes a look at what we know:

After years of worsening ties, Pyongyang made it official this week: declaring Seoul its main enemy, abolishing agencies dedicated to reunification and threatening to occupy the South during war.