Russia's war in Ukraine is igniting an old debate in Brussels over debt

• For many years, EU nations that were traditionally more conservative over how they spend their money did not want to tap capital markets together with the rest of the bloc.
• They feared that ultimately their fiscal prudence would be jeopardized by other nations with looser ideas of how to spend cash.
• Some EU officials are saying that what they did during the pandemic is a good blueprint to fund their new defense plans.

Munich, GERMANY — Should we borrow from global markets as one combined entity and raise new debt together?

That's the question hanging on the shoulders of EU officials as they promise to spend more on defense amid Russia's onslaught in Ukraine.

This debate is not new — and it is historically complex.

For many years, EU nations that were traditionally more conservative over how they spend their money did not want to tap capital markets together with the rest of the bloc. They feared that ultimately their fiscal prudence would be jeopardized by other nations with looser ideas of how to spend cash.

However, in 2020, the 27 members of the European Union decided that the best way to deal with the financial and extraordinary impact of the Covid-19 pandemic was to jointly raise debt.

Now almost four years down the line, some EU officials are saying that what they did during the pandemic is a good blueprint to fund their new defense plans.

But others disagree.

"This is not the magic solution, but it could it could help actually to speed up and to expand our industrial capacity. And that is really what's at stake today," Alexander de Croo, Prime Minister of Belgium, told CNBC Friday on the sidelines of the Munich Security Conference, about what raising new debt could mean for Europe's defense plans.

Estonian Prime