U.S. President Barack Obama delivers remarks about the agreement reached with Iran about a peaceful nuclear program in the Rose Garden at the White House April 2, 2015 in Washington, DC. The so-called P5+1 nations reached an agreement for an Iranian nuclear program and a process to lift sanctions against Iran after talks in Switzerland. (Photo by Chip Somodevilla/Getty Images) President Barack Obama stepped up his efforts to sell a nuclear deal with Iran, saying it was a “once in a lifetime” opportunity to check Tehran’s nuclear ambitions while emphasising the US has other options if the framework falls apart. In a lengthy, wide-ranging interview with the New York Times, Mr Obama sought to explicitly rebut criticism from Israeli prime minister Benjamin Netanyahu that the deal threatens Israel’s existence, saying that it was “personally difficult” for him to hear suggestions his administration has not consistently supported Israel’s interests. “I […]