Jake Sullivan faced the toughest global challenges of any national security adviser in a half-century. How did he do?

Following the fall of the Syrian regime, the Islamic State is exploiting power vacuums to rebuild as Turkey positions itself ...

Coercive diplomacy” could leave Tehran to choose either a negotiated disassembly of its nuclear capability, or a forced one.

The White House is concerned that Iran’s weakened position will prompt the regime to pursue a nuclear weapon and is ...

Concerns are mounting that President-elect Trump could face an ISIS resurgence in Syria as Turkey-backed forces hit ...

The report comes amid growing speculation that Trump is weighing the possibility of airstrikes on Iran’s nuclear facilities after he is sworn into the presidency.

"When good things happen, like Iran being weaker than it was before, there are frequently bad things lurking around the corner," the outgoing official warned.

National security adviser Jake Sullivan said he believes the Biden administration is leaving President-elect Donald Trump in ...

Speaking in a wide-ranging interview that aired Sunday on CNN's "Fareed Zakaria GPS," Sullivan said, "America’s competitors ...

The Biden administration is concerned that a weakened Iran could build a nuclear weapon, White House National Security ...

Attempts by Rep. Mike Lawler (R-NY) to shift blame on the looming government shutdown on President Joe Biden and ...