Top NATO and European military officials called in Berlin on Wednesday for more military spending to deal with threats to Europe and said that would help address concerns raised by U.S. President-elect Donald Trump.

During his election campaign, Trump questioned whether the United States should protect allies seen as spending too little on their defense, raising fears he could withdraw funding for NATO at a time of heightened tensions with Russia.

In Brussels on Wednesday, the European Union unveiled its biggest defense funding and research plan in more than a decade to reverse billions in cuts and demonstrate that it wants to pay for its own security.