You are correct that Ivanka and Jared have a great deal of influence.

Good Frum piece, thank you.It's looking like he may be a good source to read on this administration. I was just reading this "Trump Vexed by Challenges..." Politico article from today and it is suggestive here that career NSC staffers may be some of the leakers and Trump people basically have come to think of them as spies:

[....] After Trump grew infuriated by disclosures of his confrontational phone calls with foreign leaders, an investigation was launched into the source of the leaks, according to one White House aide. National Security Council staffers have been instructed to cooperate with inquiries, including requests to inspect their electronic communications, said two sources familiar with the situation. It’s not clear whether the investigation is a formal proceeding, how far along it is or who is conducting it.

The administration is considering limiting the universe of aides with access to the calls or their transcripts, said one administration official, adding that the leaks — and Trump’s anger over them — had created a climate where people are “very careful who they talk to.”

The president and his allies believe career NSC staff assigned from other agencies are out to get them. In turn, some NSC staff believe Trump does not possess the capacity for detail and nuance required to handle the sensitive issues discussed on the calls, and that he has politicized their agency by appointing chief strategist Bannon to the council [....]

'Morning Joe' has blacklisted Kellyanne Conway. And that's not all.

Washington Post - ‎5 hours ago‎

MSNBC's Mika Brzezinski said Wednesday that she refuses to book Kellyanne Conway on “Morning Joe” - and that wasn't even the harshest thing Brzezinski and co-host Joe Scarborough said about the counselor to the president.

Edit to add for those who can't click through. The article makes clear that she has been begging TV news producers to be booked for quite some time, driving some nuts that the most recent SNL sketch was spot-on that way:

The Conway caricature on “SNL” is desperate to be on TV, and the real-life Conway is, too, according to “Morning Joe.”

that she has become like a joke to them (not just NBC; CNN mentioned, too) MAINLY BECAUSE she is no longer included in any important administration meetings. While at one time she may have been offered the job of press secretary, which she turned down because of its time demands, she is no longer in the inner circle and therefore no longer has any clue about wassup in Trumpland. So whatever she says is no longer crazy spin but just made up 100% out of not just thin air but no air. Hence she said the president still supports Flynn while he is going about asking for Flynn's resignation. She is now useless to the media, even for spin and they all know it.