Yup, actually the Belgian government plans to close all nuclear plants real soon now, and replace them all with imported gas. This is beyond stupid on so many levels.

Would that be Russian gas they can then use as a bargaining chip?

Who knows. They plan to shut them off so quickly it may not even be possible to build the necessary gas plants (of course they promised to replace them "mostly" with solar and wind, which is a complete joke and would require at least a decade of building at full speed, not a mere couple of years).