In the 80's, the USSR was still seen as a threat, and President Reagan strove mightily to prevent the Europeans from becoming dependent on Russian gas. The USSR was also caught in a price collapse in the 1980's as well (on Albertans can fill you in on), which cratered the budget for the Russians and essentially started the house of cards collapsing.
Since the fall of the wall, Russia was initially seen as a partner, and oil and gas exports were encouraged. Then the "Green" movement and "Climate Change" became a sort of religion in Germany and other parts of Europe, so coal and nuclear was set aside. Since "Green" energy sources are expensive, intermittent and low energy density, the demand for Russian gas exploded. Everyone seemed to get along happily, until Vladimir Putin's 2007 speech in Munich, which may be seen in the future as the start of Cold War II. Mitt Romney wasn't psychic, he just had a foreign affairs advisor team which actually read and interpreted the news.