Tokyo stocks ended down Monday, with the Nikkei index plunging over 2 percent at one point, as concerns grew over the global economic outlook following the weekend launch of U.S. and Israeli strikes on Iran.The 225-issue Nikkei Stock Average ended down 793.03 points, or 1.35 percent, from Friday at 58,057.24. The broader Topix index finished 40.26 points, or 1.02 percent, lower at 3,898.42.On the top-tier Prime Market, the main decliners were air transportation, securities house shares, and bank issues.The U.S. dollar briefly hit a one-month high at the 157 yen line in Tokyo, bolstered by f…READ FULL ARTICLE