Greek stocks continue nosedive

Greek shares dived Tuesday by the most in decades on concerns that the country is heading for a political crisis that could put in jeopardy its vital bailout program.

The Athens benchmark index tumbled 11.3 percent in midday trading Tuesday, the biggest one-day drop since 1987, after the conservative-led government brought forward the date of a presidential vote. If the ballot in parliament proves inconclusive, it could lead to general elections.