Responding to his critics, President Barack Obama forcefully defended the weekend nuclear agreement with Iran, declaring that the United States "cannot close the door on diplomacy."
The president's remarks came as criticism of the deal to temporarily freeze pieces of Iran's nuclear program mounted from Capitol Hill and some allies abroad, most notably Israel.
Obama acknowledged that tough obstacles remain before the diplomacy with Iran can be deemed a success, but he insisted the potential rewards are too great to not test Tehran's willingness to strike a longer-term deal with the US and other world powers.
"If Iran seizes this opportunity and chooses to join the global community, then we can begin to chip away at the mistrust that's existed for many, many years between our two nations," Obama said during an event in San Francisco.
For Obama, the shift to foreign policy could be a welcome change from the domestic problems that have plagued the White House in recent weeks, especially the troubled rollout of his signature health care law. The president used the opportunity to remind Americans that the current diplomacy with Iran is in part the result of the pledge he made at his inauguration to talk to the Islamic republic without preconditions.