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Good morning and welcome to the Sunday edition of Morning Wire, where we give you the weekend rundown to get ready for the week ahead. Today, a burst of fighting has raised new questions about efforts to reach a permanent end to the Iran war; a major rupture has emerged in the partnership between Apple and ChatGPT; and the World Cup heads to the semifinals. 

But first, South Carolina Republican Sen. Lindsey Graham’s death was announced late Saturday. The senator had just returned from Ukraine and announced an agreement on Friday with the Trump administration to move forward on a package of Russia sanctions.

UP FIRST

U.S. Sen. Lindsey Graham, R-S.C. answers questions from the media near an exhibition of damaged Russian vehicles in central Kyiv on Friday. (AP Photo/Efrem Lukatsky)

Sen. Lindsey Graham, a close Trump ally, dies after a brief and unexpected illness, his office says

Sen. Lindsey Graham, one of President Donald Trump’s closest allies in Congress who traveled the globe to advocate for a more aggressive U.S. foreign policy, has died after a "brief and sudden illness," his office said. He was 71. The statement posted on social media late Saturday did not provide any additional details about the South Carolina Republican, a former Air Force lawyer, and said his family "appreciates prayers at this time and asks for privacy during this incredibly difficult period." Read more.

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Pro-government demonstrators wave Iranian and religious flags in a gathering commemorating the late Iranian Supreme Leader Ayatollah Ali Khamenei at a square in Tehran, Saturday. (AP Photo/Vahid Salemi)

US strikes Iran over latest ship attack and Tehran responds by hitting Arab states

The United States attacked Iran early Sunday morning over an Iranian strike on a vessel in the Strait of Hormuz that set the container ship ablaze and forced its crew to abandon it. Iran responded with attacks targeting several countries in the Middle East, including Bahrain, Kuwait, Qatar, Oman and Jordan. The U.S. military and Trump asserted that the strait remained open Sunday. Iran said the strait was closed until calm is restored. Read more.

Apple files lawsuit accusing ChatGPT maker OpenAI of stealing trade secrets

Apple on Friday accused OpenAI of stealing trade secrets as it seeks to build its own hardware for ChatGPT, a major rupture in a partnership between the iPhone maker and the artificial intelligence company. Apple said in the lawsuit filed in a California federal court that OpenAI encouraged Apple employees it was recruiting to share confidential information, even guiding how to avoid scrutiny when taking jobs at the other company. OpenAI said it is still reviewing the filing, but spokesperson Drew Pusateri said in a statement Friday that OpenAI has "no interest in other companies’ trade secrets." Read more.