At the historic summit between President Donald Trump and North Korea's Chairman Kim Jong Un,a bold step was taken toward establishing a new relationship between two countries that have been estranged for decades.In a joint statement signed by both men, President Trump committed to provide security guarantees to the DPRK,and Chairman Kim Jong Un reaffirmed his firm and unwavering commitment to complete denuclearization of the Korean Peninsula.The leaders pledged to cooperate for the development of new U.S.-DPRK relationsand for the promotion of peace, prosperity, and security of the Korean Peninsula and of the world.In a press conference following the summit, President Trump spoke not only of North Korea,but also of another adversarial regime whose nuclear weapons ambitions have long raised concern: Iran.In May President Trump withdrew from the Joint Comprehensive Plan of Action,the nuclear deal that lifted nuclear-related sanctions on Iran in return for Iran's limiting its nuclear activities.In explaining his decision to withdraw, President Trump said the deal was defective,and, that under its structure, an Iranian nuclear bomb could not be prevented.At the press conference in Singapore, President Trump expressed the hope that Iran's leaders come back and negotiate a real deal,because, he said, I'd love to be able to do that.He noted that the appropriate time for such negotiations may comeafter the stringent sanctions the United States is re-imposing on the Iranian regime kick in.