The U.S. has concluded a $29.4 billion deal with Saudi Arabia to supply 84 new F-15 fighter jets and upgrade 70 other F-15s already in service with the Saudi air force, White House Principal Deputy Press Secretary Joshua Earnest said.

Manufactured by Boeing, the F-15SA is “the most sophisticated and capable aircraft in the world," he said.

“The United States and the Kingdom of Saudi Arabia have signed a government-to-government agreement under the Foreign Military Sales program to provide advanced F-15SA combat aircraft to the Royal Saudi Air Force,” the spokesman said.

“Valued at $29.4 billion, this agreement includes the modernization of 70 existing aircraft as well as munitions, spare parts, training, maintenance and logistics,” he added.