(Bloomberg) — Asian stocks retreated, with South Korean shares underperforming, and the dollar climbed after news that the U.S. is monitoring information surrounding the health of North Korea’s dictator.Equities declined across Asia-Pacific markets, with 2% or more losses in South Korea and Hong Kong. Shanghai and Tokyo benchmarks were down about 1%. U.S. futures surrendered gains and were down more than 1% at one point. While the yen traded flat, the dollar climbed against most major currencies. Treasuries were little changed.The U.S. has information that North Korea’s Kim Jong Un is in critical condition, Bloomberg reported, while CNN said America […]