North Atlantic Treaty Organization Secretary-General Jens Stoltenberg criticized former President Donald Trump for suggesting that if member countries were “delinquent” with their defense contribution obligations, he would allow Russia to attack them.

“NATO remains ready and able to defend all allies,” Stoltenberg said Sunday. “Any suggestion that allies will not defend each other undermines all of our security, including that of the U.S., and puts American and European soldiers at increased risk. I expect that regardless of who wins the presidential election the U.S. will remain a strong and committed NATO ally.”