KOSPI falls 8% in early trade, triggering circuit breakers; Nikkei average down 4%

A screen in Tokyo shows the figures for the Nikkei Stock Average on the morning of June 8. (Photo by Hikaru Yagi)
TOKYO — South Korean and Japanese stocks fell sharply on Monday morning, led by tech stocks, as market expectations grow for a U.S. interest rate hike, while tensions flare up in the Middle East.