Journalist Who Resigned Over Lara Logan Tweets Tells Anderson Cooper: 'I Was a Jerk' (Video)

Former NYU fellow Nir Rosen says he didn't know that Logan's assault was of a sexual nature when he joked that "would have been funny if it happened to Anderson too."

Noted journalist Nir Rosen went on CNN's Anderson Cooper 360 on Wednesday night to discuss his controversial tweets over Lara Logan's assault in Egypt.

"Lara Logan had to outdo Anderson [Cooper],"  wrote Rosen of the CBS News correspondent, who had been brutally attacked and sexually assaulted while covering the Egypt revolution. "Yes yes its wrong what happened to her. Of course. I don't support that. But, it would have been funny if it happened to Anderson too." (Cooper also reacted to Logan's assault.)

Rosen, who has written on foreign policy for publications including the New York Times and New Yorker and contributed footage to an Oscar-nominated documentary on the Middle East, resigned his post Wednesday and apologized to both Logan and Cooper.

On his CNN show Wednesday night, Cooper grilled Rosen over the tweets in his "Keeping Them Honest" segment. Rosen said he didn't stop to think that his tweets might reach more than a "couple of people."

"I don’t have an explanation. I was a jerk," Rosen said.

Rosen insisted that he thought Logan was only "roughed up" and not sexually attacked when he sent the tweets. But, Cooper said, "reading your first two tweets, you clearly knew, it seems, that what happened to her was something sexual" and pointed out that he linked to a CBS statement which "clearly" stated it was a sexual assault.

Rosen said he hadn't read the statement fully when before he linked to it.

"At the time, I didn't know that [the assault was sexual]," Rosen added. "I've been in the Middle East and not really with much access to information. I just assumed that you were roughed up and she was roughed up a bit. Not that it's justifiable. ... It's no laughing matter, especially for a man, and there's no excuse for it. No matter what I way, or how I try to explain, I look like a jerk."

Watch the interview below.