U.S. President Donald Trump says he will be indirectly involved in the next round of negotiations on Iran’s nuclear program, scheduled for Tuesday in Geneva, Switzerland. CNN’s Kylie Atwood reports, ...

U.S. Secretary of State Marco Rubio reiterated President Trump’s support for Hungary’s Prime Minister Viktor Orban during the last stop of his European tour. CNN’s Melissa Bell has a recap.

AI models are trained on massive amounts of data. But that training doesn’t do much good without what’s known as “reinforcement learning,” a process that involves human experts teaching models the ...