By MICHAEL FALCONE

NOTABLES

• HILLARY SPEAKS: This afternoon former Secretary of State Hillary Clinton will speak at the United Nations. But the main event is likely to come afterward when, according to a top Democrat briefed on the plans, she will take questions about the e-mail controversy that has been dogging her. During an event yesterday in New York City where Clinton presented the findings of a study on the progress of women and girls, she made no mention of the controversy.

• ANALYSIS - ABC's RICK KLEIN: If this is the new Hillary, maybe you also believe this has been a good week for Hillary Clinton and her non-campaign. Some veterans of her last campaign are as baffled as the news media at her handling of the story about her e-mails; "aggressively and unresponsively" is how The Washington Post's Dan Balz characterized the way her team has handled questions. Clinton insiders are right in their complaint that no amount of explaining will ever be sufficient. Yes, there's a different standard for the Clintons - driven by decades of history, suspicions, and rivalries. It's also driven by her fame - the same fame that allows her to be the frontrunner for the 2016 nomination without the trouble of actually campaigning. Does anyone think this will be the last story like this for the 2016 cycle? Does anyone think the next one should be handled the same way?

THE BUZZ

with ABC's VERONICA STRACQUALURSI

PRESIDENT OBAMA KNEW HILLARY CLINTON'S PRIVATE EMAIL ADDRESS, BUT NOT DETAILS OF SERVER. President Obama exchanged emails with Secretary of State Hillary Clinton at her private address - @ clintonemail.com - but did not know the details of her account or how she would comply with administration policy and federal records law, the White House said Monday. "Yes, he was aware of her email address. He traded emails with her," Obama spokesman Josh Earnest told ABC's JONATHAN KARL. "But he was not aware of her personal email server or that she was using it exclusively for all her business." Asked how often Obama and Clinton emailed, Earnest said he "would not describe the number as large." In an interview Saturday, Obama said he learned of his secretary of state's private email address use through recent news reports, "the same time everybody else learned it," ABC's DEVIN DWYER reports. Earnest explained that the president was referring to details of her email system and the fact that she had not been in compliance with State Department policy for nearly six years after failing to submit the records for transfer to government computers. http://abcn.ws/184KsTC

TOM COTTON DENIES GOP LETTER UNDERMINES IRAN NUCLEAR TALKS. After leading the charge on an open letter to the leaders of the Islamic Republic of Iran about the ongoing nuclear negotiations, Sen. Tom Cotton rebutted criticism from the White House and Democrats that the message undermines U.S. negotiators working toward a deal. "It's the job of the president to negotiate but it's the job of Congress to approve," Cotton, R-Arkansas, said in an interview with ABC News in his office yesterday afternoon. "We're simply trying to say that Congress has a constitutional role to approve any deal, to make sure that Iran never gets a nuclear weapon. Not today, not tomorrow, not ten years from now." Cotton explained that Republicans wrote the letter "to make sure" Iran understands that Congress has a constitutional role to approve any potential agreement, ABC's JONATHAN KARL and JOHN PARKINSON write. "We're on the verge of a deal that could allow Iran to get a nuclear weapon in as little as ten years, so it's important that Iran realize that Congress will not allow that outcome to happen," he said. http://abcn.ws/1NCbF0D Watch KARL's "Good Morning America" report on the latest developments: http://abcn.ws/1KQlJ7n

HARRY REID CALLS GOP IRAN LETTER 'HARD SLAP IN THE FACE.' Meanwhile, Senate Minority Leader Harry Reid went after Senate Republicans for writing their letter to Iranian leaders. "Let's be very clear: Republicans are undermining our commander in chief while empowering the ayatollahs," Reid, D-Nev., said. "This letter is a hard slap in the face of not only the United States, but our allies. This is not a time to undermine our commander in chief purely out of spite. … Today's unprecedented letter originated by a United States senator who took his oath of office 62 days ago," Reid said.

SECRET SERVICE BOOT CAMP: A RARE INSIDE LOOK. What does it take to become a Secret Service officer? ABC News got a rare look inside the presidential protection service's training facility outside Washington, D.C., where officers in training undergo six months of intensive coursework and physical preparation before taking their oaths to protect the first family. According to ABC's RICHARD COOLIDGE and JORDYN PHELPS, the training ranges from firearms and first aid to self-defense and driving exercises. WATCH: http://abcn.ws/1GzZnUC

WHAT WE'RE WATCHING

IRAQI PRIME MINISTER CALLS ON MUSLIM WORLD TO UNITE IN FIGHT AGAINST ISIS. Iraq's prime minister says his country needs "much, much more support" than it is receiving from international partners, issuing a call specifically to other Muslim nations in the fight against ISIS. "We need ammunition. We need armaments. We need training. And we need more air cover," Haider al-Abadi, who replaced Nouri al-Maliki as prime minister in September, told ABC's MARTHA RADDATZ, host "On the Radar," during a sit-down interview in Baghdad. WATCH: http://yhoo.it/1xaemMD

WHO'S TWEETING?

?@McCormickJohn: Smart and timely @jmartNYT story / White House Hopefuls Highlight Working-Class Struggles: Their Own http://nyti.ms/1KNhv0t

@PhilipRucker: Good timeline of actions and regulations on Hillary Clinton's private email from @GlennKesslerWP http://www.washingtonpost.com/blogs/fact-checker/wp/2015/03/10/hillary-clintons-emails-a-timeline-of-actions-and-regulations/ …

@sppeoples: Unclear if HIllary signed the agreement. But all State Dept employees required to. http://www.usnews.com/news/politics/articles/2015/03/10/clinton-steers-clear-of-email-controversy-for-now …

@MarkHalperin: Inherent tension. @HillaryClinton Clinton is all lawyered up and she'll be worried about creating any legal exposure through what she says

@sbg1: Favorite sentence: "the man who won't use email is responsible for regulating how Americans use the Internet" http://www.politico.com/story/2015/03/lindsey-graham-email-senate-115923.html …