Actually he also said (in the link):
“The background was that President Putin declared in the autumn of 2021, and actually sent a draft treaty that they wanted NATO to sign, to promise no more NATO enlargement. That was what he sent us. And was a pre-condition for not invade Ukraine. Of course we didn’t sign that.”
15 years ago I thought the Germans were the smartest people in the world because they understood the importance of investing in public services and had a central european style of capitalism that focused on fundamentals over financialization. since then they've slowly been adopting more neoliberal policies and making really stupid foreign policy decisions. I've lost a lot of respect for them as a world leader.