Not as much as he would like to think, he doesn't.

Remember, the only reason Russia sells fuel to Europe is because they need to subsidise their internal market because the Russian public is, generally speaking, not able to afford it.

If that money tap gets turned off - shit gets real, fast.

And the gas thing gives him no leverage in the UK, because we don't important Russian gas (well, not very much, anyhoo). We do, however, handle an awful lot of Russian money.