Obama has already sent two love letters to Ayatollah Khamenei, both went unanswered.

Via Guardian:

The inauguration of the new president of Iran, Hasan Rouhani, presents “an opportunity” for Tehran to resolve concerns over its nuclear programme and better engage with the West, the Obama administrationsaid on Sunday.

In a statement marking the formal handing over of power to the moderate cleric from his hardline predecessor, Mahmoud Ahmadinejad, the White House congratulated the Iranian people for “making their voices heard” and calling for “change”. It added that should the new government in Iran move towards meeting its “international obligations”, then it would find a “willing partner in the United States”.

But the apparent olive branch comes amid hawkish calls in Washington for tougher sanctions on Tehran and the possibility of military action if no resolution is found. In a letter sent to President Barack Obama, 76 senators demanded tougher economic punishment for Iran until the Islamic republic scales back its nuclear ambitions. It also urged Obama to keep all options on the table, while keeping the door open to diplomacy.

The stance from Congress is at odds with that of the Obama administration, which has pursued a softer line on Iran as it transitions the presidency. Rouhani has pledged to follow a “path of moderation” and promised greater openness over Iran’s nuclear program. The White House appears willing to give the president a chance to put those pledges into action.

The White House statement said: “We note that President Rouhani recognised his election represented a call by the Iranian people for change, and we hope the new Iranian government will heed the will of the voters by making choices that will lead to a better life for the Iranian people. The inauguration of President Rouhani presents an opportunity for Iran to act quickly to resolve the international community’s deep concerns over Iran’s nuclear program.”