President Donald Trump erupted late last week after Defense Secretary Mark Esper issued a new military-wide directive that was a de facto ban on the display of the Confederate flag.

According to two people familiar with his reaction, Trump was fuming over Esper’s carefully worded memo that did not mention the flag by name, but effectively banned it from being flown on military installations by not naming it.

Trump has declined to denounce the Confederate flag in recent weeks and has instead said those who see it as a source of pride should be able to continue flying it.

Two separate people who have spoken with the President in the following days said they believe Esper’s job remains safe for now, though the relationship between the two has significantly deteriorated in recent months.