TEHRAN, Iran (AP) — President Donald Trump's refusal to certify the Iran nuclear deal has sparked a new war of words between the Islamic Republic and America. Trump's speech on Friday has also fueled the growing mistrust of the United States and a sense of nationalism among Iranians. The speech has served to unite Iranians across the political spectrum — from Trump's declining to call the Persian Gulf, the waterway through which a third of all oil traded by sea passes, by its name, to undercutting those trying to change Iran's clerically overseen government from within.