Sean Spicer, the incoming White House press secretary, on Friday downplayed a report that President-elect Donald Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE is inviting a nuclear arms race.

MSNBC "Morning Joe" co-host Mika Brzezinski earlier Friday reported that Trump told her he is open to having a nuclear arms race with other countries, saying he is sure that the U.S. will “outlast” all of them.

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Spicer responded on NBC’s “Today” show that he is confident that there will not be an arms race.

“[T]here’s not going to be [an arms race] because he is going to ensure that other countries get the message he is not going to sit back and allow that,” Spicer said, according to a transcript of the interview that was shared by a CNN journalist.

“What’s going to happen is they will all come to their senses and we will all be just fine.”

Just-named WH press secretary Sean Spicer plays down Trump's 'arms race' threat: 'We will all be just fine' - on @TODAYshow: pic.twitter.com/tbG5NaNJqY — David Wright (@DavidWright_CNN) December 23, 2016

Spicer said Trump was speaking out to warn other countries.

“Other countries need to be put on notice that he is not going to sit back and allow them to undermine our safety, our sovereignty,” he said. “He is going to match other countries and take action.”

Trump tweeted Thursday that the U.S. should “strengthen and expand” its nuclear capabilities.