With China, analysts believe the country's official response to South Korea's launch will be more muted but that North Korea will pressure Beijing to bend to its own line.
The 24-year-old Okoro, so impressive in the winter's indoor meets, burst into the lead but after tiring on the last bend she collapsed on the line, with Meadows finishing in fourth and Russian Mariya Savinova taking gold in 1:58.10 minutes.