In a statement about his decision to withdraw the United States from the Iran nuclear deal signed by President Obama in 2015, President Trump issued a stern warning that “there will be very severe consequences” were the Islamic theocracy to “start their nuclear program” again. But given that at least one major premise upon which the president chose to scrap the deal is that — according to Israeli Prime Minister Benjamin Netanyahu — Iran has continued its program to develop nuclear weapons, Trump’s choice of words leads one to wonder: Is it possible to “start” something that is ostensibly ongoing?