One of the most important aspects of being a leader is knowing when to listen to your own intuition and when to listen to others.
In his resignation letter, he stated, the following:
“Because you have the right to have a Secretary of Defense whose views are better aligned with yours on these and other subjects, I believe it is right for me to step down from my position,”
The rats are jumping the sinking ship. One by one, they are either quitting or being fired. Just another reason why you know who is ill qualified to lead this country.