Lindsey Graham's relationship with Donald Trump was a roller coaster.

NATO allies, Ukraine and Israel have paid tribute to U.S. Sen. Lindsey Graham as a friend and advocate of trans-Atlantic ties.

Iran said it considers the Strait of Hormuz closed once again after a vessel using an "unauthorized route" was struck by a warning shot. U.S. Central Command said a short time later that its forces began a third round of strikes against Iran.

A bipartisan bill designed to make homes more affordable for Americans is now law, despite no signature from President Donald Trump on Friday. Supporters call the 21st Century ROAD to Housing Act the most comprehensive housing reform in at least 30 years. Here's what to know.

A shooting near a street festival killed two people and wounded four others on Saturday in Toronto, Canada, prompting police to warn of an active shooter before later saying the scene was secure.

Cases of cyclosporiasis, an intestinal infection caused by a parasite, are currently being reported in nearly three dozen states, including California, according to an ABC News tally. The most common symptom of cyclosporiasis is watery diarrhea "with frequent and sometimes explosive bowel movements," according to the CDC.

Fusion energy moved from theory to reality at Lawrence Livermore National Laboratory, and now Livermore-based Inertia is working to scale the technology for commercial use. The company is developing technology aimed at bringing fusion energy to the power grid and helping meet future energy demands with a cleaner energy source.

Firefighters in Marin County were intentionally setting fire to dry grass and brush on Saturday as part of a controlled burn operation aimed at reducing wildfire risk and preparing crews for the months ahead.

With the flip of a switch, a piece of San Francisco history is glowing once again. The Golden Star Radio neon sign in Chinatown is back to its former glory after a community-driven restoration.

A DoorDash driver completed her delivery after being hit by suspect Torrance Whitaker in a police chase in Houston, Texas.