Russia launches largest airstrike on Ukraine as Putin projects strength; H.R. McMaster says President Trump will ramp up ...

President Donald Trump and National Security Adviser Gen. H.R. McMaster mutually agreed that the three-star general and Iraq war veteran will leave the Trump administration, the White House ...

Lt. Gen. HR McMaster joined The Situation Room to discuss the escalating conflict between Israel and Iran and the driving forces behind Iran’s reason to continue its fighting.

Donald Trump’s former national security adviser H.R. McMaster on Monday said he would not work for the former president again. The retired lieutenant general, who worked in the Trump ...

President Donald Trump shakes hands with Army Lt. Gen. H.R. McMaster at Trump's Mar-a-Lago estate in Palm Beach, Fla., Feb. 20, 2017, where he announced that McMaster will be the new national ...

White House national security adviser Lt. Gen. H.R. McMaster could leave his position in the White House by the end of the month, according to an administration official.

In his final public remarks as national security adviser, Lt. Gen. H.R. McMaster said the U.S. and other nations had failed to be tough enough against Russia's "pernicious" aggression that ...

Lt. Gen. H.R. McMaster had been a soldier for three decades when Donald Trump named him his national security adviser just one month into his administration. "Lots of people told me not to do it ...

He announced his selection of Lt. Gen. H.R. McMaster for the job Monday, after retired Lt. Gen. Michael Flynn was forced to resign only weeks into the job.

President Donald Trump has named Lt Gen Herbert Raymond "HR" McMaster as the new national security adviser, following the sudden ousting of Lt Gen Michael Flynn after contact made with Russian ...

President Trump on Monday named Army Lt. Gen. H.R. McMaster as his new national security adviser, replacing the ousted Michael Flynn — a move meant to help put the White House on firmer footing ...

Lt. General H.R. McMaster named Trump's national security adviser 02:05 “I just wanted to announce we’ve been working all weekend very diligently, very hard, that Gen. H.R. McMaster will ...