(CNN) Donald trump said Tuesday the U.S. was right to invade Afghanistan after the Sept. 11, 2001 terrorist attacks — a reversal of his position earlier this month when he called the war a “mistake.”

“We made a mistake going into Iraq. I’ve never said we made a mistake going into Afghanistan,” Trump told CNN’s Alisyn Camerota on “New Day,” when pressed about his comments earlier this month.

Trump told CNN’s “New Day” on October 6 that he believed entering Afghanistan was a mistake and worried about U.S. forces getting stuck there.

“At some point, are they going to be there for the next 200 years? At some point what’s going on? It’s going to be a long time,” Trump said, when asked about Afghanistan. “We made a terrible mistake getting involved there in the first place. We had real brilliant thinkers that didn’t know what the hell they were doing. And it’s a mess. It’s a mess. And at this point, you probably have to (stay) because that thing will collapse about two seconds after they leave. Just as I said that Iraq was going to collapse after we leave.”

But when pressed on that answer Tuesday, Trump said he never called going into Afghanistan a mistake and said he only talked about Iraq.

“I never said that. OK, wouldn’t matter, I never said it. Afghanistan is a different kettle. Afghanistan is next to Pakistan, it’s an entry in. You have to be careful with the nuclear weapons. It’s all about the nuclear weapons. By the way, without the nukes, it’s a whole different ballgame,” Trump said.

Trump has long bashed the Iraq War, saying again Tuesday that the decision to go there destabilized the Middle East and created an opening for Iran. But he said Tuesday that the Afghanistan War was necessary and said he supported keeping a limited number of troops there.

“Do I love anything about it? No. I think it’s important, number one, that we keep a presence there and ideally a presence of pretty much what they’re talking about — 5,000 soldiers,” Trump said Tuesday.

President Barack Obama announced last week that he would maintain troop levels in Afghanistan through much of 2016, delaying again a long-planned pullout from the country.

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