President Donald Trump spoke Sunday with Crown Prince Mohammed bin Salman of Saudi Arabia regarding last week’s deadly shooting at a U.S. Navy base in Florida, which was perpetrated by a Saudi military trainee and has further strained relations between the kingdom and Washington.

“The Crown Prince reiterated Saudi Arabia’s commitment to working with the United States to prevent a horrific attack like the Pensacola shooting from ever happening again,” the White House said in a statement. “The President thanked the Crown Prince for Saudi Arabia’s assistance with the investigation and continued partnership.”

Trump tweeted Friday that Saudi King Salman bin Abdulaziz Al Saud, the crown prince’s father, had called him “to express his sincere condolences” for the shooting at the Naval Air Station Pensacola that left four dead, including the gunman — who authorities said was a Saudi national attending flight training.

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