President Donald Trump is the only one who can pressure Russian President Vladimir Putin to negotiate an end to the war with Ukraine, Sen. Markwayne Mullin told ABC News’ “This Week” on Sunday.

The Oklahoma Republican, who is a member of the Senate Armed Services Committee, said that “Putin knows the one person that can truly change the war is the United States. If we went all-in for Ukraine, if we went all-in with the resources we have, from air superiority to the weapons that we can deploy to Ukraine, Putin knows at that point he would be in an extremely negative position.”

The senator stressed that this is “the opportunity for President Trump to talk to Putin and say, ‘Listen, we want to end the war. We don’t want to have to engage more, but we’re not going to allow you to move forward. So let’s negotiate a peace deal here, or you’re going to force our hand to be farther involved.'”

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