"Earlier today, I called my friend Bill Burns to thank and congratulate him on his upcoming retirement from the Department of State.
Over the course of his 32-year career, Bill has served with extraordinary skill, dedication, and honor. He understood - and mastered - the power and purpose of American diplomacy. He is one of the most distinguished public servants of his generation. And for those of us fortunate enough to call Bill a colleague or friend, his humility, humor, and grace make him one of the finest people we know.
Lilibet and I send Bill, Lisa, and their children our best wishes - and those of all of the men and women of the Department of Defense - as they look ahead to their next chapter together."