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

From a historic trip to a touching tribute, see the stories we're following today.
Image:
Freddie GrayNBC

Good morning. Here are some of the stories we're following today:

1. Obama Ends Longstanding Arms Embargo in Vietnam

President Barack Obama on Monday announced the end of a longstanding arms embargo on Vietnam, part of his pivot towards Asia and the latest warming of relations with America's one-time foe. Obama made the historic announcement at a news conference in Hanoi with Vietnam's President Tran Dai Quang. Read more in NEWS.

2. Clinton's Lead Over Trump Shrinks to Three Points

Hillary Clinton's advantage over Donald Trump has narrowed to just three points — resulting in a dead-heat general-election contest with more than five months to go until November, according to a new national NBC News/Wall Street Journal poll. Read more in POLITICS.

3. EgyptAir Crash: Death of Couple Leaves Three Orphaned Kids

An Egyptian husband and wife who sought medical treatment in Paris were among 66 people who perished in the crash of Flight 804, leaving three orphaned children behind. After spending a month in Paris receiving medical care, the couple were returning to Cairo on Wednesday to be reunited with their children. But the EgyptAir aircraft they boarded in Paris would never reach its destination. Read more in NEWS.

4. Verdict Expected in Trial of Officer in Freddie Gray Death

A judge is expected Monday to hand down his verdict in the case of a Baltimore police officer charged in the arrest and subsequent death of Freddie Gray. Officer Edward Nero, 30, faces assault, misconduct in office and reckless endangerment charges. Prosecutors say Nero unlawfully arrested Gray without probable cause and was negligent when he didn't buckle Gray into a seat belt. Read more in NEWS.

5. Bayer Reveals $62 Billion Offer for Monsanto

Bayer has offered $122 per share for Monsanto in an all-cash deal that values the U.S. company at $62 billion, according to a statement released Monday. The Bayer statement said the bid was at a 37 percent premium to Monsanto's May 9 closing share price of $89.03. Talks between the German drugs company and the U.S. agri-chemicals-maker were revealed on May 19. Read more in BUSINESS.

6. Gunman Dead After Killing Police Officer, Shooting Trooper

The gunman authorities say killed a police officer and injured a Massachusetts State Police trooper was fatally shot Sunday. Police say the alleged gunman, Jorge Zambrano, 35, was known to law enforcement and has an extensive record. Read more at NEW ENGLAND CABLE NEWS.

7. Madonna, Stevie Wonder Pay Tribute to Prince

Madonna paid homage to Prince by wearing his signature color and bringing another icon — Stevie Wonder — onstage to sing the classic "Purple Rain" at Sunday's Billboard Music Awards. Sitting atop a purple throne, Madonna kicked off the tribute with a version of "Nothing Compares 2 U." She was teary-eyed as she sang the song, while videos and photos of Prince projected behind her. Read more in POP CULTURE.

Nightly Spotlight: Meet the College Custodian Now Turned College Graduate

He's just earned his first bachelor's degree in mechanical engineering at the age of 54.