The Tokyo Stock Exchange's Nikkei 225 index is down 3.0 percent, and the broader Topix is down 1.2 percent.
South Korea's Kospi is down 3.4 percent.
In Hong Kong, developments are moving in the same direction, and the Hang Seng index is down 1.1 percent.
The Shanghai index is down 0.7 percent, and Shenzhen is down 0.9 percent.
