Iran is following through on the nuclear deal it struck with a U.S.-led coalition in an utterly predictable way: It is racing to fulfill those parts of the accord that will allow it to collect $100 billion in frozen funds and end sanctions on its oil exports and banking system, while expanding its belligerent and illegal activities in other areas — and daring the West to respond.

Unfortunately, the Obama administration’s response to these provocations has also been familiar. It is doing its best to downplay them — and thereby encouraging Tehran to press for still-greater advantage.

We’ve pointed out how the regime of Ayatollah Ali Khamenei has unjustly sentenced Washington Post correspondent Jason Rezaian to prison and arrested two businessmen with U.S. citizenship or residence since signing the nuclear accord. There have been no penalties for those outrageous violations of human rights. Now a United Nations panel has determined that Iran test-fired a nuclear-capable missile on Oct. 10 with a range of at least 600 miles, in violation of a U.N. resolution that prohibits such launches. Moreover, it appears likely that a second missile launch occurred on Nov. 21, also in violation of Security Council Resolution 1929.

By flouting the U.N. resolutions, Iran is clearly testing the will of the U.S. and its allies to enforce the overall regime limiting its nuclear ambitions. If there is no serious response, it will press the boundaries in other areas — such as the inspection regime. It will take maximum advantage of President Obama’s fear of undoing a legacy achievement, unless and until its bluff is called.

FROM AN EDITORIAL IN THE WASHINGTON POST