What We're Watching as 5 States Hold Crucial Primaries  —  Voters in Florida, Illinois, Missouri, North Carolina and Ohio cast crucial ballots in the race for the presidency on Tuesday.  Here are some of the things we will be watching.  —  The end or the beginning?

Measuring Donald Trump's Mammoth Advantage in Free Media  —  Of all the ways Donald Trump has shocked the political system, one of the most significant is how he wins primary after primary with one of the smallest campaign budgets.  —  He still doesn't have a super PAC.

Clinton: 'We didn't lose a single person' in Libya  —  Hillary Clinton on Monday defended the intervention in Libya that she championed as secretary of state, telling MSNBC's Chris Matthews that the United States “didn't lose a single person.”  —  “Libya was a different kind of calculation.

A King in His Castle: How Donald Trump Lives, From His Longtime Butler  —  PALM BEACH, Fla. — Everything seemed to sparkle at the Mar-a-Lago estate here on a recent afternoon.  The sun glinted off the pool and the black Secret Service S.U.V.s in the circular driveway.

A Situation in Which Donald Trump Wins the White House  —  The specter of further violence at Donald J. Trump's campaign events has amplified warnings from his Republican opponents: If nominated, the bombastic billionaire simply couldn't win the presidency.  —  “A disaster” for Republicans …

Trump campaign manager's behavior prompted staff concerns  —  Donald Trump's staff and advisers have expressed concerns about campaign manager Corey Lewandowski's quick temper and heavy-handed leadership, and some even planned a coup against him last month, sources involved in the discussions told POLITICO.

Ben Carson to Newsmax: I'm Promised a Spot in Trump Administration  —  Dr. Ben Carson revealed on Newsmax TV Monday that he will work in Donald Trump's administration — at least in an “advisory capacity” — if the Republican presidential front-runner is elected to the White House.

Tech mogul accused of keeping ex-stripper as sex slave for 13 years  —  A Silicon Valley venture capitalist has been sued for $40 million by a woman who claims he used her as a virtual sex slave for 13 years.  —  Michael Goguen, who had worked for a firm that funded Google and Paypal …

Working-Class Whites Have Moral Responsibilities — In Defense of Kevin Williamson  —  This weekend, my colleague Kevin Williamson kicked up quite the hornet's nest with his magazine piece (subscription required) that strikes directly at the idea that the white working-class (the heart of Trump's support) is a victim class.

Brussels manhunt after gunfire in raid ‘on Paris suspects’  —  Belgian security forces are hunting for at least two men after shots were fired at police during a counter-terrorism raid in the capital, Brussels.  —  Three officers were reportedly hurt, one of them seriously.

Do giant gas bubbles explain the mystery of the Bermuda Triangle?  —  Age: 52 years.  —  Appearance: Then all of a sudden ... disappearance!  —  Location: Between Miami, Puerto Rico and Bermuda (approx).  —  What is it?  Well, according to Vincent Gaddis, who first coined the phrase …

Teacher, TV star Rod Durham dies  —  Influential Leon High School drama teacher, theater director and “Extreme Weight Loss” star Rod Durham has died.  He was 52.  —  “He was someone they (the students) could go talk to when they needed to,” Leon High School principal Billy Epting said on Monday morning.

Donald Trump's rise sparks alarm in Japan  —  The favorite for the Republican nomination has been attacking the Trans-Pacific Partnership.  —  As polls open for US primaries in Ohio and Florida, the political elite in Tokyo is starting to confront a disconcerting idea …