Negotiations with Iran about its nuclear program are close to an impasse — an outcome that should surprise no one, The Washington Post writes Tuesday, June 19, in its editorial. If there is a positive aspect to this outcome, it is that the United States and its partners appear to be sticking to their position on what Iran must do to open the door to a diplomatic solution. Western officials say further meetings will depend on whether Iran shows itself ready to carry out the package of steps originally proposed last month, including a freeze of its most advanced form of uranium enrichment, the export of its existing stockpile of that enriched uranium, and the closure of an underground processing facility known as Fordow. The Obama administration should resist any effort to weaken the steps that Iran must take, or to grant Tehran major sanctions relief for partial concessions.