Qatar awarded a contract for up to 210 new wide-body civilian airliners to Boeing on Wednesday, a blockbuster deal for the beleaguered aerospace company that was inked in a Doha ceremony where President Donald Trump hailed it as evidence of his abilities to promote U.

Boeing Co. won the single biggest deal in the US planemaker’s history, with Qatar Airways placing an order for at least 160 widebody aircraft during a visit to Doha by US President Donald Trump.

The Qatar-Boeing deal is the latest in a series of high-profile aviation agreements signed during Trump’s four-day Middle East visit. Just a day earlier, Saudi Arabia’s sovereign wealth fund inked a $4.8 billion agreement with Boeing, and U.S. Commerce Secretary Howard Lutnick announced a $10 billion order from a British airline.