ROME (AP) — Iran and the United States are preparing for a second round of negotiations over Tehran’s rapidly advancing nuclear program in Rome. The talks Saturday in Italy over Easter weekend again will hinge on U.S. billionaire Steve Witkoff, the U.S. Mideast envoy of President Donald Trump, and Iranian Foreign Minister Abbas Araghchi. Whether the two men find common ground in the high-stakes negotiations could mean success or failure in the talks. At risk is a possible American or Israeli military strike on Iran’s nuclear sites, or the Iranians following through on their threats to pursue an atomic weapon.