Tokyo stocks plunged Monday, with the Nikkei stock index ending at its lowest level since Jan. 8, as crude oil futures surged after U.S. President Donald Trump said power plants will be attacked if Iran does not lift the closure of the Strait of Hormuz.The 225-issue Nikkei Stock Average ended down 1,857.04 points, or 3.48 percent, from Thursday at 51,515.49, after briefly losing over 2,600 points. The broader Topix index finished 122.96 points, or 3.41 percent, lower at 3,486.44.On the top-tier Prime Market, the main decliners were marine transportation, nonferrous metal and real estate iss…READ FULL ARTICLE