The top U.S. general in Europe said on Thursday that the U.S. government did not have an effective unified approach to deal with Russia's cyberthreat.

U.S. officials have warned repeatedly that Russia is trying to interfere in the 2018 midterm U.S. elections by hacking or using social media to spread propaganda and misleading reports, much as it did during the 2016 presidential race.

Lawmakers, particularly Democrats, have accused the Trump administration of doing too little to combat hacking. Some lawmakers have stressed the need for a "whole of government approach."