(Bloomberg) — Stocks in Asia are set for a mixed open after South Korean President Yoon Suk Yeol’s shock decision to impose martial law for the first time in more than 40 years, only to reverse course hours later, caught global markets off guard. Most Read from BloombergAs Wars Rage, Cities Face a Dark New Era of Urban DestructionRiyadh Metro Partially Opens in Bid to Ease City’s Traffic JamsFutures show slight declines in Hong Kong and Sydney shares, with modest gains in Tokyo, while S&P 500 cRead More