Tehran neither rejected negotiations nor accepted face-to-face talks in its response to President Trump’s letter calling for talks to curb Iran’s advancing nuclear program. Here’s what to know.

Suspected U.S. airstrikes have pummeled sites across Yemen controlled by the country’s Houthi rebels, including neighborhoods in the capital, Sanaa.

Military build-ups, airstrikes, sanctions and more are pushing U.S.-Iran tensions to breaking point, heightening the potential for war.