WASHINGTON — The White House says it is prepared to talk one-on-one with Iran to find a diplomatic settlement to the impasse over Tehran's reported pursuit of nuclear weapons, but there's no agreement now to meet. National Security Council spokesman Tommy Vietor said Saturday that President Barack Obama has made clear that he will prevent Iran from getting a nuclear weapon and will do whatever's necessary to block that from happening. Vietor said Iran must come in line with its obligations, or else faced increased pressure. “The onus is on the Iranians to do so, otherwise they will continue to face crippling sanctions and increased pressure,” Vietor said in a statement. He noted that efforts to get Iran back to the table with the five permanent members of the UN Security Council and Germany — the so-called “P5+1” — continue. Iran denied Sunday a report in a US newspaper that it had plans for direct talks with the United States over its disputed nuclear program. The New York Times reported, citing Obama administration officials, that the United States and Iran had agreed in principle to one-on-one negotiations on Iran's nuclear program, though the White House quickly denied the report. “We don't have any discussions or negotiations with America,” Iranian Foreign Minister Ali Akbar Salehi said in a news conference Sunday. “The (nuclear) talks are ongoing with the P5+1 group of nations. Other than that, we have no discussions with the United States.” Despite unprecedented global penalties, Iran's nuclear program is advancing as it continues to defy international pressure, including four rounds of sanctions from the UN Security Council, to prove that its atomic intentions are peaceful. Those sanctions, coupled with tough measures imposed by the United States and European nations are taking their toll, particularly on Iran's economy. Iranian authorities have in recent weeks been forced to quell protests over the plummeting value of the country's currency. The rial lost nearly 40 percent of its value against the US dollar in a week in early October, but has since slightly rebounded. US officials say they are hopeful that pressure from the sanctions may be pushing Iran's leaders toward concessions, including direct talks with the United States. — AP