Former Trump national security advisor Robert O'Brien told FNC's "Sunday Morning Futures" why Donald Trump is talking about ...

Former National Security Advisor Robert O’Brien raised alarm bells Tuesday on Fox Business about the safety and economic ...

Former National Security Advisor Robert O'Brien warns about terror on the rise and the porous southern border posing a threat ...

The former Trump national security advisor said recent talk about buying Greenland and controlling the Panama Canal again is ...

Trump's former White House national security advisor made veiled threats against a NATO ally, taking the Greenland issue in a ...

Former National Security Advisor Robert O’Brien raised alarm bells Tuesday on Fox Business about the safety and economic ...

Former national security adviser Robert O’Brien said in a Sunday interview that Denmark should let the U.S. “buy” Greenland ...

"As the climate gets warmer, the Arctic is going to be a pathway that maybe even cuts down on the usage of the Panama Canal.

Robert O’Brien’s tenure as Donald Trump’s White House national security advisor was a difficult one, stemming from the fact that O’Brien didn’t seem to fully appreciate the precise ...

Former national security adviser Robert O’Brien said in a Sunday interview that Denmark should let the U.S. “buy” Greenland if it cannot defend the self-governing country, noting the ...