SEOUL, South Korea (AP) — As war spreads across the Middle East, U.S. rivals and allies in Asia are preparing for the consequences, which include possible economic shock and long-term security threats. Here’s a look at how the fighting in the Middle East is impacting the Koreas, Japan and China. North Korea At a major political conference last month, North Korean leader Kim Jong Un insisted the country’s decades-long pursuit of nuclear weapons was the “correct” choice, despite crippling