Rep. Michael Waltz (R-FL) claimed he and President Joe Biden’s national security advisor Jake Sullivan are “are hand in glove,” collaborating on national security issues during the transition. “Jake Sullivan and I have had discussions, we’ve met,” Waltz said on Fox News Sunday. “For our adversaries out there that think this is a time of opportunity, that they can play one administration off the other — they are wrong.” The Florida representative was tapped by President-elect Donald Trump to be his national security advisor on Nov. 11. He is the first Green Beret to serve in Congress. Waltz’s conversation with Sullivan was first reported by Axios on Saturday. Sources say the pair discussed the ongoing wars in Gaza and Ukraine. Last week, Biden approved Kyiv’s use of anti-personnel landmines, a decision Waltz equated to “World War I trench warfare.” He added “We need to bring this to a responsible end. We need to restore deterrence and peace and get ahead of this escalation later rather than responding to it.”