Markets rally, oil tumbles after US-Iran deal announcement Stock markets across the Asia-Pacific region rallied sharply on Monday after the United States and Iran confirmed an agreement aimed at ending the conflict between Washington, Israel and Tehran. Japan’s Nikkei 225 rose more than 5 percent in early trading, while South Korea’s KOSPI gained 5.7 percent. Taiwan’s TAIEX advanced 2.7 percent, and Australia’s S&P/ASX 200 climbed about 1.5 percent.