I was reading the following report on the NY Times, and came across the following:
The goal has to be to shut down all of the program that gives Iran the capability to build a bomb. The United Nations Security Council ordered that all enrichment should be ended six years ago, but the major powers were right to start the talks with a more short-term goal: to stop the most dangerous kind of enrichment.
Since the part in bold refers to a past wish and should possibly use the should have construction, how could this be justified instead? And how is it different from the should have one?