Asia-Pacific stock markets declined on Thursday as investors reacted to the Federal Reserve's decision to keep interest rates on hold and ongoing geopolitical tensions between Israel and Iran. Japan's Nikkei index fell 0.74%, South Korea's Kospi dropped 0.34%, and Hong Kong's Hang Seng lost 0.48%, while other regional indexes remained mostly flat. The Federal Reserve's reluctance to cut rates and the Middle East conflict also weighed on U.S. index futures. European markets closed lower amid concerns over the Israel-Iran conflict and U.S. interest rate decisions. Indian shares showed muted performance influenced by the same factors. Overall, investor sentiment was dampened by the combination of a hawkish Fed stance and escalating tensions in the Middle East.