There is a plan A and a plan B, - Rubio

"This is a complex, three-year war that is going on on a very long military front, with great complexity. So nobody claims it's easy, but I want everybody to understand, the plan is this. Plan A: cease fire so that we can move on to Plan B, the second phase, which is to get everybody to the negotiating table, perhaps through shuttle diplomacy, to find a way to permanently end this war in a way that is durable, that takes into account everybody's needs and so on. Nobody is saying this second part is going to be easy, but we can't even get to this second part until we get past the first part," he said.

Rubio noted that it is difficult to agree on a permanent end to the war while they are shooting at each other, according to CBS News.

That's why, Rubio added, U.S. President Donald Trump wants a ceasefire.

"That's what we're working on, assuming we can do it. It's not going to be easy. We're moving into the second phase, which is to discuss something longer and more permanent. That's going to be difficult. It's going to require a lot of hard work, concessions from both sides, but it has to happen. This war cannot continue. The president has made that clear, and he is doing everything he can to end it," he said.

Rubio called Trump's special envoy Steve Whitkoff's meeting with the Russian dictator on March 13 promising.

Photo: U.S. Department of State.