Asia markets tumble as Trump-Iran threats keep investors on edge; Nikkei, Kospi fall 4% - CNBC

Asia markets tumble as Trump-Iran threats keep investors on edge; Nikkei, Kospi fall 4%  CNBCAsian stock markets plunge amid Trump’s ultimatum on Iran  Al JazeeraAsia shares skid, yields rise as Gulf war escalates  ReutersAsia Equities Gain Ahead of Fed, Oil Retreats But Stays High  WSJTraders Brace for Turbulent Open as War Rages On: Markets Wrap  Bloomberg.com