WASHINGTON (AP) -- Pushing back hard, President Barack Obama forcefully defended the temporary agreement to freeze Iran's disputed nuclear program on Monday, declaring that the United States "cannot close the door on diplomacy."
The president's remarks followed skepticism of the historic accord expressed by some U.S. allies abroad as well as by members of Congress at home, including fellow Democrats. Israeli Prime Minister Benjamin Netanyahu, one of the fiercest opponents of the six-month deal, called it a "historic mistake" and announced he would be dispatching a top envoy to Washington to try to toughen the final agreement negotiators will soon begin hammering out.
Obama, without naming names, swiped at those who have questioned the wisdom of engaging with Iran.
"Tough talk and bluster may be the easy thing to do politically, but it's not the right thing to do for our security," he said during an event in San Francisco.
The weekend agreement between Iran and six world powers -- the U.S., Britain, France, Russia, China and Germany -- is to temporarily halt parts of Tehran's disputed nuclear program and allow for more intrusive international monitoring. In exchange, Iran gains some modest relief from stiff economic sanctions and a pledge from Obama that no new penalties will be levied during the six months.
Despite the fanfare surrounding the agreement, administration officials say key technical details on the inspections and sanctions relief must still be worked out before it formally takes effect. Those talks will tackle the toughest issues that have long divided Iran and the West, including whether Tehran will be allowed to enrich uranium at a low level.
Iran insists it has a right to enrich uranium for peaceful purposes, and many nuclear analysts say a final deal will almost certainly leave Iran with some right to enrich. However, that's sure to spark more discord with Israel and many lawmakers who insist Tehran be stripped of all enrichment capabilities. British Foreign Secretary William Hague said he expects the deal to be fully implemented by the end of January.
European Union officials say their sanctions could be eased as soon as December. Those restrictions affect numerous areas including trade in petrochemicals, gold and other precious metals, financial transfers to purchase food and medicine, and the ability of third countries to use EU-based firms to insure shipments of Iranian oil again.
The groundwork for the accord was laid during four clandestine meetings between U.S. and Iranian officials throughout the summer and fall. An earlier meeting took place in March, before Iranians elected President Hassan Rouhani, a cleric who has taken more moderate public stances than his predecessor. Details of the secret talks were confirmed to The Associated Press by three senior administration officials.
The U.S. and its allies contend Iran is seeking to produce a nuclear bomb -- of particular concern to Israel, which fears an attack -- while Tehran insists it is merely pursuing a peaceful nuclear program for energy and medical purposes.
Even with the criticism, for Obama the sudden shift to foreign policy presents an opportunity to steady his flailing second term and take some attention off the domestic troubles that have plagued the White House in recent weeks, especially the rollout of his signature health care law. Perhaps with his presidential standing -- and the strength of the rest of his term -- in mind, he made sure on Monday to draw a connection between the nuclear pact and his long-declared willingness to negotiate directly with Iran.
"When I first ran for president, I said it was time for a new era of American leadership in the world, one that turned the page on a decade of war and began a new era of engagement with the world," he said. "As president and as commander in chief, I've done what I've said."
Later, at a high-dollar fundraiser in Los Angeles, Obama said he will not take any options off the table to ensure Iran does not develop a nuclear weapon.
However, he added, "I've spent too much time at Walter Reed looking at kids 22, 23, 24, 25 years old who've paid the kind of price that very few of us in this room can imagine on behalf of our freedom not to say that I will do every single thing that I can to try to resolve these issues without resorting to military conflict."
The temporary accord is historic in its own right, marking the most substantial agreement between Iran and the West in more than three decades. The consequences of a permanent deal could be far more significant, lowering the prospects of a nuclear arms race in the volatile Middle East and perhaps opening the door to wider relations between the U.S. and Iran, which broke off diplomatic ties following the 1979 Islamic revolution.