Oil

Oil enters a bear market, and the losses are continuing.

U.S. stocks end week on down note.

Company executives hit back at reports they were weighing an exit from the poverty-stricken country.

The ruling deals a major setback for TransCanada.

U.S. crude now down by around 20 percent since early October.

The decision is a blow to TransCanada.

Prices sank amid fears that the oil market is oversupplied compared to demand.

Crude stocks moved back above their five-year average levels in October.

Washington re-imposed sanctions against Iran's oil exports on Monday but granted waivers to its biggest customers.

Washington gave 180-day exemptions to eight importers - China, India, South Korea, Japan, Italy, Greece, Taiwan and Turkey.

National security adviser John Bolton said more sanctions are coming.