You do not achieve 3-star rank in the military without toeing the party line. McMaster gained his third star under President Obama who was notorious for purging the military of senior leaders (i.e., see here) with worldviews that did not align with the President's - a worldview that was hostile to Israel while accomodating of radical Islam, and with calamitous ideas on social experimentation and change. McMaster clearly echoed Obama's worldview or he would never have achieved 3 stars.
Jerusalem Post columnist Caroline Glick wrote recently that National Security Advisor H.R. McMaster is purging pro-Israel staff from the National Security Council (NSC), turning the administration against President Donald Trump’s policies. In a Facebook post, Glick noted that “all of these people” whom McMaster has fired this week — Rich Higgins, Derek Harvey, and Ezra Cohen-Watnick — “are pro-Israel and oppose the Iran nuclear deal, positions that Trump holds.” She noted that the firings were the latest evidence that NSA McMaster is “deeply hostile to Israel and to Trump”. See here.
There is little question that LTG McMaster dutifully and faithfully drank the kool-aid coming up through the ranks, publicly making such bizarre remarks as "the Islamic State is not Islamic". As Raymond Ibrahim warned in March 2017 here on the Middle East Forum, "it seems we are going right back to being "willfully ignorant" of reality." [Raymond Ibrahim is a Judith Friedman Rosen Fellow at the Middle East Forum.] Former NSC officials report here that ‘everything the president wants to do, McMaster opposes.’ Why? Because McMaster remains loyal to the previous President who gave him 3 stars and who clearly shaped his worldview.
A.Z. Mohamed (a Muslim born and raised in the Middle East) wrote an open letter here over at the Gatestone Institute to LTG McMaster warning that the NSA Security Advisor's worldview is not in accord with reality.
In other words, as al-Kalbani has confirmed -- and contrary to what McMaster has been telling his staff and his commander-in-chief, President Trump -- Muslim terrorists are Islamic, and the term "radical Islamic terrorism" is apt, accurate and extremely "helpful."
Having lost his apparent mentor, McMaster is feeling the pressure according to this report, having grown “increasingly volatile” and "frequently blows his top in high-level meetings." Unfortunately, the longer the political and military leadership anchor themselves in a self-concocted fantasy worldview, the more violent, catastrophic and destructive it will be when reality finally - and rudely - intrudes.
Therefore do not be foolish ... (Eph 5:17, ESV)