Cain doesn't know China has nuclear weapons

The rough week for Herman Cain continues.

On PBS News Hour Tuesday evening, the GOP candidate once again showed a lack of foreign policy understanding when asked by host Judy Woodruff about China.

"Yes, they're a military threat, they've indicated that they're trying to develop nuclear capabilities, so yes, we have to consider them a military threat," he said.

But Cain, who previously claimed to be apathetic , is inaccurate in his facts. China has had nuclear weapons since 1964.

WATCH: WATCH the video from PBS, first broadcast on November 1, 2011. Cain's comments on China begin at 11:35.