More on the South Korea - Japan feud...published at 05:07 Greenwich Mean Time 6 March 2020
South Korea's presidential office has not held back after Japan announced a two-week quarantine for South Korean visitors.
"While our country is sternly dealing with Covid-19 under its scientific and transparent quarantine system that is highly evaluated by the rest of the world, Japan is losing its faith from the international community because of its ambiguous and passive quarantine efforts," Cheong Wa Dae said.
Earlier in the day, Seoul's foreign ministry expressed "extreme regret" over Japan's decision, and threatened reciprocal action.
Japan has recently been criticised for its handling of the outbreak - and not just by South Korea.
Most of this criticism concerns the Diamond Princess cruise ship which was docked in Japan last month.
Some critics said that by attempting a quarantine on the ship, Japanese officials essentially turned the boat into a floating incubator.
Six people who'd been on the ship later died.