![borders-2099223_1280](https://www.stephaniemiller.com/wp-content/uploads/2019/09/borders-2099223_1280-696x573.jpg)
A weekend drone attack on Saudi Arabia that cut into global energy supplies and halved the kingdom’s oil production threatened Sunday to fuel a regional crisis, as the U.S. released new evidence to back up its allegation that Iran was responsible for the assault amid heightened tensions over Tehran’s collapsing nuclear deal.