Trump's Homeland Security Adviser Tom Bossert Resigns.
BERMAN: We do have breaking news to report. One of the president's closest aides has resigned. Homeland Security Adviser, Tom Bossert, we learned just moments ago, has submitted his resignation. Joining me now by phone, someone who held that same job, Homeland Security adviser under President Obama, CNN National Security Analyst, Lisa Monaco. Lisa, what do you make of this decision? We saw Tom Bossert out on the Sunday shows just two days ago. And today he resigns.</s>LISA MONACO, CNN NATIONAL SECURITY ANALYST: Well, good morning, John. Good to be with you. Look, I'm actually out on the West Coast right now, and folks are literally waking up to this news. I'm at a conference with a number of former government officials and cyber security officials. And it's quite stunning, I think, to get this news. As you point out, Tom Bossert has been out in recent days and indeed through much of his time thus far in the White House being a fairly -- a prominent and outspoken voice for the administration's policies, which is exactly what you do as the Homeland Security adviser. Folks would understand this is a role that was created after 9/11. It is designed to be the president's chief adviser on counterterrorism issues, on homeland security, cybersecurity issues. And it is somebody who is by design supposed to have direct and immediate access and thereby the confidence of the president. So it's quite surprising. All indications were that he had that confidence. It's quite surprising to see this move.</s>BERMAN: Direct and immediate access to the president. Something that presumably Tom Bossert had. Now there is some speculation over the last several minutes, people trying to figure out, well, what changed since Sunday? Well, Monday was John Bolton's first day on the job as the National Security adviser. As opposed to Homeland Security adviser. Now every White House is different. But traditionally speaking what's the relationship between the National Security adviser and the Homeland Security adviser?</s>MONACO: So over time that relationship has evolved and in this administration as in the last administration the Homeland Security adviser as I mentioned has direct and immediate access and is the chief adviser to the president on Homeland Security and counterterrorism issues. That role, Tom Bossert's role, has been historically the deputy national security adviser. So there's a bit of a dual hat relationship there and organizationally that person reports through the National Security adviser. So as you point out, the new fact here is that John Bolton came in as the National Security adviser on Monday, so I think it's fair to speculate that this is the new team, maybe John Bolton wanting to have his new team in there. But, again, I would stress what's so important about this Homeland Security adviser is having somebody who is directly reporting to the president, so this may be an indication that Bolton is looking to kind of really change that role and have his team and his team member be in that role.</s>BERMAN: And very quickly, Bossert is just the latest departure from inside the White House, Hope Hicks, you know, we've seen Rob Porter, so many changes at the White House and also the administration as we look at this picture right there. How does that change the working environment, do you suspect?</s>MONACO: Well, it's concerning, right? Because the Homeland Security adviser is somebody who is supposed to be spending 24/7 of their day and their job focused on Homeland Security threats and so to the extent this reflects just more upheaval and chaos in the West Wing. That's not great for having that focus on the Homeland Security --</s>BERMAN: Right.</s>MONACO: -- and cybersecurity and terrorism threats.</s>BERMAN: Lisa Monaco, waking up early for us with this breaking news from the West Coast. Lisa, we really appreciate it. We'll be right back.</s>MONACO: Good to --