The International Atomic Energy Agency has finally grown a backbone and yet both Israel and Iran seem to have reached a quiet ceasefire over the nuclear standoff.On Tuesday, the IAEA reported for the first time that Iran has far exceeded the low enriched uranium threshold for a nuclear bomb. The threshold is 1,000 kilograms of enriched uranium. The IAEA confirmed that the Islamic Republic has enriched over 1,500 kilograms.In addition, the agency’s relatively new chief, Rafael Grossi, told AFP on Tuesday: “Iran must decide to cooperate in a clearer manner with the agency to give the necessary clarifications.”“The fact that we found traces [of uranium] is very important. That means there is the possibility of nuclear activities and material that are not under international supervision and about which we know not the origin or the intent.“That worries me,” Grossi added.Those are fighting words coming from the normally “no drama” IAEA.Grossi’s predecessor, Yukiya Amano, did all he could to avoid public conflict with Tehran, no matter what new problematic facts came to his desk.A Reuters report also said that Grossi would confront the Islamic Republic over multiple undeclared sites that his inspectors were being denied access to.And yet, both Israel and Iran so far are silent. Neither the Prime Minister’s Office nor the Foreign Ministry indicated they would be issuing an immediate response.Iranian news outlets merely carried the IAEA’s report about its exceeding the nuclear threshold and the 300-kilogram limit by a magnitude of five, with little commentary or counterargument.For several months, the agency has been pressing Iran for explanations about undeclared nuclear material that it found around February 2019. The nuclear material was announced by Prime Minister Benjamin Netanyahu in September 2018 as having been found by the Mossad.That announcement came after Netanyahu’s April 2018 announcement that the Mossad had appropriated tens of thousands of Iran’s secret nuclear files.It is those files that, sources close to Mossad director Yossi Cohen have told The Jerusalem Post, provided a map of undeclared Iranian nuclear sites – some of which the IAEA is now clearly trying to confront Tehran about.SO WHY is Israel silent?One reason is that it may be embarrassed.IDF Chief-of-Staff Aviv Kochavi on January 14 said that Iran would not reach this point until January 2021. Oops.Former IAEA official Olli Heinonen had predicted a much earlier date, in an interview with the Post on January 7, a prediction that appears to have been closer to how things played out.Another reason is that Iran has kept its uranium enrichment around the 4.5% level. As long as the Islamic Republic stays away from the medium 20% level, let alone the 90% weaponization level, there is no immediate crisis.Prior to the 2015 nuclear deal, Iran had enough low enriched uranium for over 10 nuclear weapons, and the world lived with it since Tehran did not move toward much higher levels of enrichment.This may be the same reason that Iran is staying quiet.With all of its violations and noise, it is actually maintaining a careful, conservative strategy which will not unduly provoke Israel – and maybe even the US – into a preemptive strike.Still, there is no question that Iran may have cut its breakout time from 12 to six months or even less.Will the IAEA get answers from Iran? Probably not. At the end of the day, the agency’s tougher tone is welcome and helpful, but the real keys to breaking the deadlock are in the hands of the EU-3, China and Russia.The EU-3 (France, Germany and Italy) recently made it clear that they will not follow through with their threat to snap back full UN global sanctions on Iran, as long as Tehran does not move to higher levels of enriched uranium or kick out inspectors.Incomplete cooperation with the IAEA probably will not lead the EU-3 to pull the trigger without a new smoking gun showing that Iran is clandestinely trying to break out, as opposed to clandestinely perform some noncommittal off-the-books nuclear-related tests.And so the awkward Israeli-Iranian nuclear ceasefire has brought an even more awkward moment, in which the normally quiet IAEA is being loud and the main players in this story are broadcasting deafening silence.