Former President Joe Biden’s chief of staff, Ron Klain, told staffers on the House Oversight Committee that former National ...

FOX News correspondent Aishah Hasnie reports on former Biden chief of staff Ron Klain's testimony in a closed-door House ...

Klain -- a member of a purported "Politburo" that made high-level decisions as Biden grew less cogent in office -- appeared ...

Former Biden chief Ron Klain told House investigators that Hillary Clinton expressed concerns about Biden's political ...

Former President Joe Biden’s own allies reportedly raised serious concerns about his ability to stay in the race long before ...

White House national security adviser Jake Sullivan, left, speaks during a joint press conference with the head of the Office of the President of Ukraine Andriy Yermak, right, in Kyiv, Ukraine ...

Aug. 29 (UPI) --U.S. National Security Adviser Jake Sullivan met Thursday with Chinese President Xi Jinping to discuss a number of issues as part of ongoing efforts to manage the bilateral ...

Suspended army officer cadet Jake Sullivan has been sentenced to more than three years in jail for raping a colleague from ...

Jake Sullivan told ABC News that Biden aims to help Ukraine "strengthen' its position. President-elect Trump has been skeptical of the level of US aid sent to Ukraine. National security advisor Jake ...

White House National Security Adviser Jake Sullivan met with Chinese President Xi Jinping Thursday in Beijing as he wraps up his three-day trip to China. This is Sullivans first visit to China as ...