TOKYO, Japan (AFP) — Shares in Toshiba plunged Monday on a report that said its loss-hit United States nuclear unit could be placed into bankruptcy protection as early as this week. Westinghouse Electric could file for Chapter 11 on Tuesday, while the troubled unit is eyeing Korea Electric Power to help with a subsequent restructuring, Japan’s Nikkei business daily said, without citing sources. The two firms have an existing technology partnership. Toshiba’s Tokyo-listed stock opened […]