But this weekend, he announced he would not recertify the agreement this time around. What does that mean?

但是上周末，他宣布这次他拒绝确认伊朗遵守核协议。这意味着什么？

You have a license, you have training, you have to pass a test and you have to recertify.

你必须有执照，要培训，要通过考试，还要重新认证。

But this weekend, he announced he would not recertify the agreement this time around.

但本周末，他宣布这次不会重新认证该协议。