The Note's Must-Reads are a round-up of today's political headlines and stories from ABC News and the top U.S. newspapers. Posted Monday through Friday right here at www.abcnews.com

Compiled by ABC News' Amanda VanAllen, Will Cantine and Jordan Mazza

IRAN ABC News' MaryAlice Parks: " Sec. John Kerry: 'No Daylight' Between Israel, U.S. On Goal For Iran Nuclear Program" Following a historic deal on Iran's nuclear program brokered overnight in Geneva, Secretary of State John Kerry sought to temper concerns expressed by Israel over the agreement, saying in an interview on "This Week" that there was no daylight between the U.S. and its closest Middle East ally when it came to their goals for Iran's controversial nuclear program. "Israel and the United States absolutely share the same goal here. There is no daylight between us, with respect to what we want to achieve at this point," Kerry told "This Week" anchor George Stephanopoulos shortly after the deal was reached. "We both want to make it certain Iran cannot have a nuclear weapon. And Iran cannot be in a place where they can breakout and suddenly get that nuclear weapon." LINK

The Wall Street Journal's Carol E. Lee, Jay Solomon, and Laurence Norman: " Two-Track Negotiations Led To Iran Nuclear Deal" The nuclear agreement between world powers and Iran is the product of two separate diplomatic tracks, one top secret and the other widely publicized-a risky gambit spearheaded by the White House that nearly derailed the talks. For nearly five years, the White House drove a back-channel effort, personally overseen by President Barack Obama, which directly engaged Tehran and was concealed from Washington's closest allies and even some senior U.S. officials. It ran alongside the formal negotiations, known as the P5+1 talks, in which the U.S. and five other countries negotiated with Iran. LINK

USA Today's Oren Dorell: "Nuke Deal Leaves Iranian Capability, Arab Fears Intact" Whether Iran complies with its promises or not, the deal reached by world powers over its nuclear program will alter the Middle East dramatically, observers and analysts say. "I am afraid Iran will give up something to get something else from the big powers in terms of regional politics - and I'm worrying about giving Iran more space or a freer hand in the region," Abdullah al-Askar, chairman of Saudi Arabia's appointed Shoura Council, a quasi-parliament that advises the government on policy, told the Daily Star in Lebanon. LINK

The Hill's Bernie Becker: " Top Dems, Republicans Blast Obama's Nuke Deal With Iran" Top lawmakers on both side of the aisle on Sunday voiced skepticism about the newly struck agreement with Iran, and vowed to keep up the pressure with sanctions. Senior members in both chambers said that, at first glance, Iran got the better end of the deal with western powers, China and Russia - effectively exchanging looser sanctions for very little progress in impeding Tehran's nuclear capabilities. LINK

The Washington Times' Stephen Dinan and Tom Howell Jr.: " Kerry Defends Iran Deal: 'It's Not A Question Of Trust" The Obama administration put on a full-court press Sunday to defend the deal the U.S. and key allies struck to try to halt Iran's burgeoning nuclear program - but the White House faces a tough sell with members of Congress who criticized the terms and said they'll still press for even tighter sanctions on the Islamic republic. LINK

Politico's Josh Gerstein: " The Iran Deal's Built-In Deadline Drama" Supporters of a tougher line against Iran were disappointed in the nuclear deal President Barack Obama agreed to with Tehran Saturday - but the pact did deliver an item long on their wish list: a deadline. For several years, Israeli officials and American advocates for Israel have publicly expressed urgency regarding the Iranian nuclear threat, warning that key milestones in Tehran's nuclear program were approaching. U.S. officials often responded - at least in public - with vaguer or longer timetables that always seemed to push the prospect of a military strike against Iran just over the political horizon. LINK

The Washington Post's Joby Warrick: " After Iran Nuclear Deal, Tough Challenges Ahead" The euphoria over the signing of a historic nuclear agreement with Iran gave way to sober reality Sunday as the parties clashed over a key element of the deal and congressional skeptics threatened to thwart it. The Obama administration moved quickly to sell the agreement to nervous U.S. allies, particularly Israel, and to persuade lawmakers not to push ahead with new economic sanctions that could prompt Iran to abandon the six-month freeze on its nuclear program set under the accord. LINK

The New York Times' Michael R. Gordon: " Longer-Term Deal With Iran Faces Major Challenges" The Obama administration's successful push for an accord that would temporarily freeze much of Iran's nuclear program has cast a spotlight on the more formidable challenge it now confronts in trying to roll the program back. For all of the drama of late-night make-or-break talks in Geneva, the deal that Secretary of State John Kerry and his negotiating partners announced early on Sunday was largely a holding action, meant to keep the Iranian nuclear program in check for six months while negotiators pursue a far tougher and more lasting agreement. LINK

2016 ELECTIONS Bloomberg's Michael C. Bender and Julie Hirschfeld Davis: " Republicans Pitch Contrasting Models For 2016 Nominee" The way Wisconsin Governor Scott Walker and U.S. Senator Ted Cruz see the ideal 2016 Republican presidential nominee, it sounds a lot like themselves. For Walker, 46, that means a candidate "with firm roots from outside of Washington." LINK

ABC NEWS VIDEO " Iran Nuclear Deal Offers Sanctions Relief for Nuclear Concessions" LINK

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