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A new cyber-spying program called Flame has been spreading across the Middle East. A Russian security company called Kaspersky Labs discovered the virus. Some experts believe Flame was developed by the makers of the virus Stuxnet.

Mitt Romney won the GOP presidential primary in Texas Tuesday night. By some counts, that gives him the last delegates he needed to formally secure the Republican nomination. He celebrated in Las Vegas with a campaign event and a fundraiser. But his victory was overshadowed by campaign surrogate Donald Trump who has a gift for finding the spotlight.

The U.S. and several governments worldwide have expelled Syrian diplomats in a coordinated protest against last weekend's massacre of more than 100 civilians in the village of Houla. The diplomatic fallout has spread to California, where Syrian Consul General Hazem Chehabi announced his resignation from the post. For more on his decision, Renee Montagne talks to Chehabi.

Opposition leader Aung San Suu Kyi has left Myanmar for the first time in more than two decades. Her first trip out of the country formerly known as Burma is on a short hop to Thailand to meet with refugees and attend the World Economic Forum on East Asia.

Rep. Thaddeus McCotter, R-Mich., is facing the daunting prospect of running a write-in campaign to get re-elected this year, as his campaign fell far short of the number of petition signatures he needs to qualify for the August primary ballot.

Compounding McCotter's troubles: It appears election fraud may have played a part in the failure.

What snarky headline writer could resist a story about "hot tuna?" Or how about "tuna meltdown?"

Really, it seems just plain daffy to ignore a new study that says some Pacific bluefin tuna picked up traces of radioactive material from the Fukushima nuclear disaster last year and brought it across the Pacific Ocean.

It's a prime irony that while Europe is suffering a great financial crisis, in counterpoint, the Continent is starting to spend the summer awash in a veritable plethora of joyous sporting events, a rolling athletic circus to divert Europeans from Angela Merkel telling them to get serious and tighten their belts.

Now, as is the case every summer, there are two Grand Slam tennis championships — the French Open, which is already under way, and Wimbledon. Then the Tour de France and British Open golf.

A mountain-born treasure of American folk music, Doc Watson, died Tuesday in North Carolina at age 89.

His manager said in a statement that Watson died at Wake Forest Baptist Medical Center in Winston-Salem, after abdominal surgery last week.

Watson was born in Deep Gap, N.C., in the Blue Ridge Mountains, in a three-room house he shared with eight brothers and sisters. He revolutionized not just how people play guitar but the way people around the world think about mountain music.

A shortage of Adderall began last year, sending millions of people with attention deficit/hyperactivity disorder and narcolepsy on perpetual wild goose chases to find drugstores with the pills they need to stay alert and focused.

So it's not surprising that Adderall counterfeiters have seized a big marketing opportunity. What is surprising is their clumsiness.

In an interview with CNN, The Donald did not back down from his opinion that President Obama was not born in the United States.

CNN's Wolf Blitzer presented him with the overwhelming evidence that Obama was indeed born in Hawaii, but Donald Trump just raised his voice as he and Blitzer accused each other of sounding "ridiculous."

CNN calls it a "smackdown," and, indeed, it was a pretty contentious interview. Take a look:

The most potentially influential politician you've probably never heard of, former two-term Maine Gov. Angus King, on Tuesday officially entered the race to replace retiring moderate GOP Sen. Olympia Snowe.

King, 68, an alternative-energy entrepreneur and supporter of President Obama, filed more than 6,000 signatures with Maine's secretary of state to ensure his place on November's ballot.

He'll run as an independent, as he did for his successful gubernatorial runs in the 1990s.

Congress is considering legislation allowing the government to search through Internet traffic for early warnings of cyberattacks. The bills are controversial — worries about government surveillance have led to protests online.

The government does have a tool that could calm fears about this kind of legislation — it just doesn't use it.

On a recent Monday morning in Washington, D.C., a group of 3-year-old preschoolers bumbled their way into a circle, more or less, on the rug of their classroom. It was time to read.

The children sat cross-legged as their teacher, Mary-Lynn Goldstein, held high a book, Don't Let the Pigeon Drive the Bus. There was a short conversation about pigeons, then, for reasons that weren't entirely clear, cows; and then Goldstein began to read. She read as most teachers read, occasionally stopping to ask a question, point out a picture or make a comment about the story.

Facebook's stock fell $3.07 to end the day at $28.84. That's first time it's fallen below $30 since the stock went public.

That price is also 24 percent below its opening price of $38.

The Wall Street Journal that the drop had to do with negative sentiment about the stock, as well as the fact that today traders were able to trade on derivatives.

The Facebook stock saw so much trading, the Journal reports, that it triggered Nasdaq's short sale circuit-breaker.

At the moment the polls close in Texas Tuesday evening, most media outlets and very likely even the Mitt Romney campaign will declare that he has secured enough delegates to win the Republican nomination for president.

For what it's worth, there are two problems with that statement. First, as a practical matter, Romney actually won the Republican nomination when the other candidates competing for delegates in the primaries and caucuses stopped doing so. That was weeks ago.

One of the day's most-discussed stories has to be The New York Times' report headlined "Secret 'Kill List' Proves A Test Of Obama's Principles And Will."

It's a long, detailed look at how the president has "placed himself at the helm of a top secret 'nominations' process to designate terrorists for kill or capture, of which the capture part has become largely theoretical."

Saying that each one of the recipients has touched countless lives, President Obama presented 13 Presidential Medals of Freedom during a ceremony in the East Room of the White House today.

All of the people on the stage, Obama said, "are my heroes individually." He said that if it were not for John Doar, the Justice Department official who personally escorted University of Mississippi's first black student to campus, he would not be president.

At sunset tonight Manhattan's grid will match up perfectly with the sun, producing a dazzling, golden display on each one of the city's streets.

It happens twice a year and it's been termed "Manhattanhenge," coined by Neil DeGrasse Tyson, the director of the Hayden Planetarium at the Museum of Natural History.

NPR's Margo Adler sent this report for our Newscast unit:

In The Last Full Measure: How Soldiers Die In Battle, Michael Stephenson describes how soldiers fight and die, how those who have lived deal with the experience of combat, and what it reveals about warfare and human nature.

He acknowledges it's a sensitive subject, but he argues it's an important one. Understanding how soldiers die, Stephenson tells NPR's Neal Conan, "is central to an understanding of what combat is. And I think we have to engage with it."

Transcript

NEAL CONAN, HOST:

Countries around the world expelled Syrian diplomats today, explaining that the representatives of a country that slaughters its own people are not welcome. United Nations observers confirmed the massacre of over 100 men, women and children, many of them children, in the village of Houla last Friday. U.N. special envoy Kofi Annan met with Syrian President Bashar al-Assad in Damascus today to demand that his government abide by a cease-fire agreement that now lies in bloody taters.

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NEAL CONAN, HOST:

Transcript

NEAL CONAN, HOST:

It's Tuesday and time to read from your comments. Cathy May(ph) in Bigelow, Arkansas heard our conversation about possible compensation for organ donors and wrote: I'm donating a kidney to a friend this coming August. While I don't care to be paid for donating, I would love to be reimbursed from my loss of salary while recovering from the process. It's a great honor to help another person, but it comes at a cost for me.