Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Nuclear Deal Hangs in Balance as Iran Intensifies Uranium Enrichment Henry Ridgwell LONDON - The 2015 Iran nuclear deal was hailed by its signatories at the time as a triumph of global diplomacy. The elation was short-lived. Former U.S. President Donald Trump withdrew the United States from the agreement three years later and imposed crippling sanctions on Iran's economy. Tehran responded by increasing its nuclear enrichment activities, edging closer to the levels of purity required for atomic weapons. With a new administration in the White House, U.S. allies in Europe are hoping that the escalating crisis can be stopped in its tracks and that both sides can be tempted to return to the negotiating table. U.S. President Joe Biden has indicated his willingness to rejoin the nuclear deal, known as the Joint Comprehensive Plan of Action (JCPOA), if Tehran halts uranium enrichment and returns to its obligations under the agreement. "President Biden has been very clear in saying that if Iran comes back into full compliance with its obligations under the JCPOA, the United States would do the same thing," U.S. Secretary of State Antony Blinken told reporters on January 27. "And then, we would use that as a platform to build with our allies and partners what we called a longer and stronger agreement and to deal with a number of other issues that are deeply problematic in the relationship with Iran." Blinken said that point remains a long way off. .