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' Carrie Halperin, Will Cantine and Jordan Mazza

SYRIA ABC News' John Parkinson: "White House to Brief Key Members of Congress on Syria" One week since the Syrian government purportedly utilized chemical weapons on civilians and oppositions forces near Damascus, the White House is set to provide a briefing for bipartisan members of congressional leadership as well as the top ranking members of national security committees on Thursday, multiple congressional sources confirmed to ABC News. A time for the briefing has not been determined by the White House, several sources said, although lawmakers may attend the briefing in person or participate via teleconference. LINK

USA Today's Susan Davis: "Boehner seeks answers from Obama on Syria" House Speaker John Boehner, R-Ohio, sent a letter to President Obama seeking answers to 14 questions regarding U.S. military intervention in Syria, but the speaker stopped short of seeking a formal authorization vote before the president can engage. Rather, Boehner contended that the president needs to consult with Congress but make the case to the American people to justify engaging in Syria's civil war. LINK

The Wall Street Journal's Farnaz Fassihi, Peter Nicholas, and Micholas Winning: "U.S., U.K. Face Delays in Push to Strike Syria" President Barack Obama declared that the Syrian government carried out a deadly chemical weapons attack on civilians last week and must pay the price, capping a day of stalled diplomacy that suggested any military strikes could be delayed. Mr. Obama cautioned that he hasn't yet decided whether to launch an attack, saying in an interview with PBS that he wants to send a shot across Syria's bow without drawing the U.S. into a long conflict. LINK

The Hill's Julian Pecuet: " Administration to brief lawmakers on secret Syria intelligence" The Obama administration is expected to brief key lawmakers Thursday on the secret intelligence underpinning its firm conviction that Bashar Assad's forces attacked rebels with chemical weapons last week. The chairmen and ranking members on key Senate and House committees - armed services, foreign affairs and intelligence - are scheduled to participate in a conference call Thursday with senior administration officials, Yahoo News reports. LINK

The Los Angeles Times' David S. Cloud and Ken Dilanian: " U.S. would rely on missiles in a strike on Syria" A U.S. attack on Syria is likely to begin at night with fiery explosions at military installations, artillery batteries and headquarters near the capital, Damascus, and other government strongholds around the country, according to current and former U.S. officials. The strikes, involving dozens of cruise missiles launched from U.S. warships, attack submarines and possibly warplanes, would probably last up to three days. LINK

50 TH ANNIVERSARY OF MARCH ON WASHINGTON The Boston Globe's Peter Schworm and Joshua Miller: "50 years later, some dreams realized, others deferred" As President Obama recalled how Martin Luther King Jr. gave "mighty voice to the quiet hopes of millions," they nodded slowly, in quiet affirmation. When he paid homage to those who marched on Washington 50 years ago, saying they made America "more free and more fair," a few clasped their hands together, as if a victory had been won. And when the nation's first black president spoke of how people who love their country can change it, the small group of co-workers who listened intently to Obama's speech smiled softly. LINK

The New York Times' Peter Baker and Sheryl Gay Stolberg: " Saluting A Dream, And Adapting It For A New Era" President Obama stepped into the space on Wednesday where the Rev. Dr. Martin Luther King Jr. once stood, summoning his iconic dream of a colorblind society in a celebration of a half-century of progress and a call to arms for the next generation. On a day of overcast skies and misty rain, tens of thousands of Americans - black, white and every shade in between - returned to the site of Dr. King's "I Have a Dream" speech to listen to the nation's first black president pay tribute to the pioneers who paved the way for his own ascension to the heights of American government. LINK

The New York Times' Alessandra Stanley: " At Ceremony For Civil Rights Milestone, An Image That Speaks Volumes" He could have mentioned it. But he didn't. Instead, moments before beginning his speech on Wednesday, President Obama flashed a big grin that seemed to acknowledge the weird aptness of the moment. He is a twice-elected president of the United States, and that is something that even the Rev. Dr. Martin Luther King Jr. might not have dreamed possible when he gave his historic "I Have a Dream" speech 50 years ago. LINK

The Washington Post's Ed O'Keefe: " Republicans Absent From March On Washington" Not a single Republican elected official stood on the steps of the Lincoln Memorial on Wednesday with activists, actors, lawmakers and former presidents invited to mark the 50th anniversary of the March on Washington - a notable absence for a party seeking to attract the support of minority voters. Event organizers said Wednesday that they invited top Republicans, all of whom declined to attend because of scheduling conflicts or ill health. LINK

Politico's Katie Glueck, Breanna Edwards and James Arkin: " Obama, Clinton Honor king, Call For More Progress" President Barack Obama on Wednesday paid tribute to Dr. Martin Luther King, Jr. and the civil rights activists who marched on Washington 50 years ago in the name of justice as he called for renewed courage to battle today's challenges on issues like economic inequality. Obama, along with Presidents Bill Clinton and Jimmy Carter, civil rights leaders, Oprah Winfrey and tens of thousands of people descended on the National Mall on Wednesday to mark the 50th anniversary of Dr. Martin Luther King, Jr.'s revolutionary "I Have a Dream" speech. LINK

Bloomberg's Phil Mattingly: " Obama Seeks Economic Equality In America Changed By King" President Barack Obama, speaking from the same Washington stage where Martin Luther King Jr. delivered a defining speech steering a nation's course toward civil rights, said that for all the transformation, work remains in countering growing U.S. economic disparities. "To secure the gains this country has made requires constant vigilance, not complacency," said Obama, appearing on the steps of the Lincoln Memorial, where 50 years ago today King called on Americans to make good on the nation's founding promise of equality for all. LINK

ABC NEWS BEIRUT BUREAU RE-OPENS Politico's Dylan Byers: " ABC News To Re-Open Beirut Bureau" With tension mounting in the Syria, ABC News is planning to reopen its bureau in Beirut, POLITICO has learned. The bureau, which was opened 45 years ago by Peter Jennings, closed after the Lebanese civil war ended in the early 1990s. It will be ABC's second bureau in the Middle East, alongside its Jerusalem bureau. LINK

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