Retired general Anthony Tata, who called Obama a 'terrorist leader' and referred to the former US president as a Muslim, continues to advise the defense secretary

Mariam Taha Thompson, 61, suspected of sharing classified information, including the names of American intelligence assets, with a Lebanese love interest tied to terror group

President does not specify punishment, but says he expects military to review conduct of Lt. Col. Alex Vindman, who was already ousted from White House role in apparent retribution

After other officials say US weighing sending thousands more soldiers, Mark Esper says 'we have sufficient capability in the theater to deter what we need to deter'

Defense Department announcement comes as Trump draws criticism for vowing to protect Syria's fuel reserves even as he heralds withdrawal of American troops

The US has no defense secretary and the temporary one just quit. His replacement might only stay for six weeks; top Democrat calls situation 'appalling'

Army Secretary Mark Esper will come in as acting Pentagon leader amid rising tensions in the Middle East