As presidential candidates have been doing since the dawn of time, Joe Biden made his fair share of promises and commitments on the campaign trail.

The United States, he said, would be respected again on the world stage. Russia and its spymaster president, Vladimir Putin, would be held accountable. U.S. foreign policy would be smarter, less volatile, and more considerate of Washington’s allies.

Some promises, however, are more important than others. And if there is one idea the president-elect should make good on, as he prepares for Inauguration Day on January 20, it’s the absolute necessity of reforming Washington’s strategic relationship with Saudi Arabia.

Unlike many of his colleagues, Biden has been a relative skeptic of the kingdom during his long career. When he was a senator and influential member of the Senate Foreign Relations Committee, he frequently pointed out in floor speeches and media interviews that Saudi Arabia was less an iron-clad friend of the United States and more a partner of convenience.