Unlike President Trump, whose positions on many issues were not widely known before he decided to run for the White House, the views and beliefs of Joe Biden, the veteran senator and former vice president to Barak Obama, are known to all.

The day before the American election, rumors spread through the networks of the Middle East that some Arab countries were trying to influence their expatriates living in America to vote for Donald Trump. But after the American media called the election for Biden, even staunch Trump supporters like Israel Prime Minister Benjamin Netanyahu and Saudi King Salman bin Abdulaziz offered traditional congratulations to the apparent victor, and the Middle East began preparing for a change of administration in Washington.

Before diving into Biden’s expected Middle East policies, two important points should be made: The Middle East has lost its high priority for American presidents over the past two decades, and this trend will continue under Biden. America is leaving the Middle East, reducing its military presence (Trump cut the number of bases and troops in Syria and Iraq),...