It’s make-or-break for Kovykta

With political interests impinging more and more on Russia's oil and gas industry, unease has descended on the sector. Tax rises are in the offing and the future of high-profile projects—including TNK-BP's Kovykta—seem far from assured. Some fear state interference will only increase. But for TNK-BP it is business as usual. Tom Nicholls talks to Robert Dudley, the firm's chief executive, and German Khan, executive director