Kim Jong Nam 'given large dose of VX that killed in 20 minutes'

The dose of nerve agent given to North Korean ruler Kim Jong Un's half-brother was so high that it killed him within 20 minutes and caused "very serious paralysis", Malaysia's health minister has said.

Kim Jong Nam died on February 13 at Kuala Lumpur's airport in what Malaysian police say was a well-planned hit by two women who wiped a liquid on his face.