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KNOW IT ALL: Tuesday's Top Stories at NBC News

A look at the leading headlines.
Baby Alexander Camelton pictured shortly after his birth
Baby Alexander Camelton pictured shortly after his birthLincoln Park Zoo

Good morning. Here are some of the headlines we're following this morning:

‘Revolution’: Hillary Clinton Shatters Political Glass Ceiling

Almost eight years to the day after ending her first presidential bid while celebrating the 18 million cracks her supporters put in the "highest, hardest glass ceiling," Hillary Clinton took a major step towards breaking through that final barrier Monday evening, and towards becoming the country's first woman president. She surpassed the "magic number" of delegates needed to clinch the Democratic Party's nomination, according to NBC News projections. Read more at DECISION 2016.

Sanders Blames Media's 'Rush to Judgement' for Declaration

Bernie Sanders' campaign derided media organizations Monday night for declaring Clinton the presumptive nominee of the Democratic Party, arguing that her purported win is dependent on unpledged "superdelegates" who will not formally vote until the party's convention in July. Read more at DECISION 2016.

Why Peace Prospects Look Worse After Taliban Chief's Death

American and Afghan officials heralded new prospects for peace after the Taliban's leader died in an airstrike — but signs suggest strife in the region is bound to get worse. The Taliban's swift naming of a new leader — powerful and deeply conservative cleric Haibatullah Akhundzada — plus the intensifying drumbeat of attacks since Mansour’s death suggest the militancy’s leadership doesn't plan on going to the negotiating table any time soon. Read more in NEWS.

Tropical Storm Colin Makes Landfall With Heavy Rain, Wind

The National Weather Service said Colin's maximum sustained winds were around 50 mph with higher gusts. The storm's winds and rain were scattered over a wide area. The heaviest rainfall was expected to hit the central Florida peninsula in the early-morning hours, according to the National Weather Service. Read more in NEWS.

Prison Escapees Joked About 'Shawshank Redemption'

As they chipped away at a wall inside a tunnel of the Clinton Correctional Facility last spring, David Sweat and Richard Matt had the Hollywood movie "The Shawshank Redemption" on their minds. The film tells the story of convicted murderer Andy Dufresne, who spends nearly two decades using a rock hammer to dig a tunnel out of his cell. The parallels were not lost on Sweat and Matt, who were trying to make their own escape. Read more in NEWS.

Judge Puts Settlement of Prince's Estate on Fast Track

A Minnesota judge wants to get moving quickly on sorting out Prince's estate, giving people claiming to be the late singer's heirs only until Friday to file their claims. Read more in NEWS.

Helen Chavez, Widow of Civil Rights Activist Cesar Chavez, Dies at 88

Helen Chavez helped her husband launch and sustain what became the first enduring farm workers union in the United States. She used her fierce determination to help change the lives of thousands of farm workers and millions of others who were inspired by La Causa. Read more at NBC Bay Area.

Alexander Camelton: Zoo Baby Named After Broadway Hit

A Chicago zoo celebrated International Ungulate Day and the upcoming Tony Awards with a creative name for its newly born Bactrian camel. The Lincoln Zoo announced over the weekend that the baby calf was named "Alexander Camelton" — a nod to founding father Alexander Hamilton and the hit Broadway musical "Hamilton," which picked up a record-breaking 16 Tony nominations. Read more in NEWS.

As they chipped away at a wall inside a tunnel of the Clinton Correctional Facility last spring, David Sweat and Richard Matt had the Hollywood movie "The Shawshank Redemption" on their minds. The film tells the story of convicted murderer Andy Dufresne, who spends nearly two decades using a rock hammer to dig a tunnel out of his cell. The parallels were not lost on Sweat and Matt, who were trying to make their own escape.