The return of Opec's influence, but how long will it last?

Mustafa Alrawi and Chris Nelson discuss the surprise resurgence of the Organization of the Petroleum Exporting Countries with economics expert and regular columnist Omar Al-Ubaydli ahead of the much anticipated meeting of the group at the end of the month in Vienna, where it is expected to confirm that a crude output restraint deal with non-Opec producers -- including Russia -- to shore up oil prices will be extended to the end of next year.