Romania’s Defense Minister Ionuț Moșteanu resigned Friday over false claims on his resume, marking the second time in recent weeks that a NATO country close to Russia has had to change its defense leadership.

“Romania and Europe are under attack from Russia. Our national security must be defended at all costs. I do not want discussions about my education and the mistakes I made many years ago to distract those who are now leading the country from their difficult mission,” he said.

According to local media, Moșteanu wrote in his official resume that he graduated from Athenaeum University in Bucharest even though he never attended the school. He also added the Faculty of Automation at the Polytechnic University of Bucharest to his CV despite dropping out.

Moșteanu’s resignation just months into the job follows the ousting of Dovilė Šakalienė as Lithuania’s defense minister over a dispute about the Baltic country’s defense budget — and as Europe mulls how to respond to intensifying Russian hybrid attacks.

Romania’s Economy Minister Radu Miruță is expected to take over the defense portfolio on an interim basis, the government said.

Moșteanu’s departure comes with Romania facing regular Russian drone incursions. Bucharest is also 48 hours away from a deadline for EU countries to submit a plan to the European Commission for how they will spend money from the EU’s loans-for-weapons SAFE program.

Romania is set to be the second-largest beneficiary of the scheme, in line for a €16.6 billion pot of cash.