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

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

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.

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

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

A former national security adviser to Donald Trump has finally acknowledged the existence of climate change, unlike his ...

Former Trump national security advisor Robert O’Brien told FNC's "Sunday Morning Futures" why Donald Trump is talking about buying Greenland and seizing back control of the Panama Canal.

O'Brien compared Trump to Ronald Reagan and commented that he saw the President-elect as looking ahead at coming global conflicts.

Robert O'Brien breaks down foreign policy under a second Trump administration, the president-elect's demanding the return of the Panama Canal, the purchase of Greenland and the threats posed by China.