Former National Security adviser General Keith Kellogg said that former President Donald Trump is the only one who will be able to bring peace between Russia and Ukraine as president. 

"He's the only one who can do it," Kellogg said on the "John Solomon Reports" podcast. "Because what you need is an interlocutor, and somebody who can actually sit down and talk to both sides."

He added that neither President Joe Biden or Vice President Kamala Harris could properly talk to the leaders of Ukraine and Russia. 

Western leaders had discussions last month about whether or not they would allow Kyiv to use weapons supplied by the West to hit targets deep inside Russia.

Top Russian officials warned that if Ukraine started launching long-range strikes with the support of the West, the response won't "be pretty."

Kellogg said that the war is brutal and needs to end quickly. 

"I think the president could do that by pulling both sides together," Kellogg said. "And I think you start with getting both sides to start talking. And I think he can do that immediately."