When President Obama visits Saudi Arabia this week for a meeting with representatives from the Gulf Cooperation Council countries, he should avoid doing what he did at Camp David last May, the last time he met with them: promise more arms sales. Since Mr. Obama hosted that meeting, the United States has offered over $33 billion in weaponry to its Persian Gulf allies, with the bulk of it going to Saudi Arabia. The results have been deadly.

The Saudi-American arms deals are a continuation of a booming business that has developed between Washington and Riyadh during the Obama years. In the first six years of the Obama administration, the United States entered into agreements to transfer nearly $50 billion in weaponry to Saudi Arabia, with tens of billions of dollars of additional offers in the pipeline.

The Pentagon claims that these arms transfers to Saudi Arabia “improve the security of an important partner which has been and continues to be an important force for political stability and economic progress in the Middle East.” Recent Saudi actions suggest otherwise.

A prime example of what’s wrong with unbridled American weapons transfers to the Saudi government is the Saudi-led war in Yemen. According to the United Nations, more than 3,200 civilians have been killed since Saudi bombing began last March. A majority of these deaths have been a result of airstrikes, many of which have been carried out with aircraft, bombs and missiles supplied by the United States and Britain, including United States-supplied cluster bombs.