WASHINGTON -- US national security adviser Jake Sullivan on Sunday vowed there would be "real costs" for China if the country went forward with providing lethal aid to Russia in its war on Ukraine, ...

Former National Security Advisor Jake Sullivan disputes Secretary of State Marco Rubio's characterization that continuing negotiations with Russian President Putin are a step toward ending the war in ...

President Trump is meeting with Ukrainian President Volodymyr Zelenskyy at the White House today to discuss ending Russia's war in Ukraine. But former national security adviser Jake Sullivan says ...

As the global strategic framework moves on from the uneasy period of US hegemony and China's rise, a critical quadrilateral is forming China continues to be the target of US security and strategic ...