Drone proliferation

During the early part of the Iraq war, someone had the idea of installing a Hellfire missile on a surveillance drone.  Thus inventing one of the most formidable weapons ever, which can kill an enemy with no risk to the person wielding the weapon.  Now other countries, such as Saudi Arabia, want them and are trying to buy them from U.S. companies.  Read this:  David Ignatius – Dazzling new weapons require new rules for war.

Can or should anything be done?