RIYADH, Saudi Arabia (AP) — U.S. President Donald Trump met with interim Syrian President Ahmad al-Sharaa in Saudi Arabia on Wednesday, the first encounter between the two nations’ leaders in 25 years and one that could mark a turning point for Syria as it struggles to emerge from decades of international isolation.

President Donald Trump signed a $600 billion agreement with Saudi Arabia on Tuesday that includes a major defense contract and substantial investments in artificial intelligence—as U.S. business executives made their own set of deals at a conference in the backdrop of Trump’s visit to Riyadh, the first stop on his four-day tour of the Middle East.