Former Secretary of Defense Mark Esper joins "CBS Mornings" to discuss the revelations he makes in his new memoir, "A Sacred Oath: Memoirs of a Secretary of Defense During Extraordinary Times." In his book, Esper sheds light on what happened inside the ...

Mark Esper, Former United States Secretary of Defense, warns the U.S. is unprepared for a prolonged conflict with Iran due to weak weapons stockpiles and defense capacity, while stressing AI’s critical role in future military dominance.

President Donald Trump fired Defense Secretary Mark Esper on Monday, an unprecedented move by a president struggling to accept election defeat and angry at a Pentagon leader he believes wasn't loyal enough. The decision was widely expected as Trump had ...

WASHINGTON (Reuters) - U.S. Defense Secretary Mark Esper on Sunday said he did not see specific evidence from intelligence officials that Iran was planning to attack four U.S. embassies, an assertion made by President Donald Trump in justifying the killing ...

In a slap at a longtime ally frequently reviled by President Trump, Defense Secretary Mark Esper announced Wednesday that the U.S. plans to withdraw roughly a third of the 36,000 American forces stationed in Germany. Nearly 5,600 of the 11,800 troops to be ...