Who is Palestinian President Mahmoud Abbas?

Trump will sit down with Abbas today.

The sit-down will mark the second time the two leaders have met since Trump took office and comes amid Trump's first overseas trip as president.

"Throughout my lifetime, I've always heard the toughest deal to make is the deal between Israelis and Palestinians," Trump said during a May 3 press conference at the White House alongside Abbas. “Let’s see if we can prove them wrong.”

Trump told Abbas during the press conference, “I want you to be the Palestinian leader to sign the final agreement with Israel.”

The 82-year-old leader of the Palestine Authority has been part of peace talks with the Israelis dating back more than two decades. He was one of the principal negotiators of the Oslo Accords and the 1990s peace agreements. But in 2015 Abbas declared that Palestinian territories are no longer bound by the the Oslo Accords and accused Israel of regularly violating the agreements.

Former Palestinian President Yasser Arafat appointed Abbas the first Palestinian prime minister in March 2003, but his tenure lasted less than six months. Abbas resigned from his post in September of the same year after a months-long power struggle with Arafat.