Not Russia or any other country can use energy as a tool of coercion to change the policy of other countries, U.S. Vice President Joe Biden has said.

"No country –- not Russia or any other nation –- can use energy as a weapon of coercion to bully or change the policy of another nation. We’ve known for a long time – you've known for a long time – that dependence on a single source of energy is a big problem, a big problem," he said at Munich Security Conference on February 7.

"And now is the time to act. Europe has made steady progress already. For example, you passed laws with the goal of creating an integrated European energy market. Now is the time to implement those reforms and push for more diversity in fuel types, sources, transit routes," he said.

"We the United States want to be as helpful as we possibly can. It’s overwhelmingly in our interest that Europe not be dependent," he added.

"But it’s within your power to make energy security the next chapter in the European project of integration and market expansion that began decades ago – and maybe I’m the only one old enough to remember – with the European Coal and Steel Community. That's a frightening prospect to think of that," he said.