Saturday's Headlines: The volatile life of Omar Mateen

Inside Trump's financial ties to Russia and unusual flattery of Putin; Dozens of GOP delegates launch new push to halt Trump; Robots, 'Iron Man' and drone swarms: It's the new arms race;   The morning's most important stories, selected by Post editors   Top Stories The volatile life of Omar Mateen He often masked his turmoil, but over the years, the Orlando shooter's inner conflict seemed to explode again and again — toward classmates, toward co-workers, toward his first wife and finally toward the 49 strangers he massacred on the bloody floor of the Pulse nightclub. By Kevin Sullivan and William Wan  •  Read more » Inside Trump's financial ties to Russia and unusual flattery of Putin The GOP candidate's relationship with the Russian leader and his warm views toward the country are among the more curious aspects of his presidential bid. By Tom Hamburger, Rosalind S. Helderman and Michael Birnbaum  •  Read more »   Dozens of GOP delegates launch new push to halt Trump The delegates — angered by Donald Trump's recent comments on gun control and alarmed by his sinking poll numbers — have begun the most organized effort so far to keep him from the party's nomination. By Ed O'Keefe  •  Read more » Robots, 'Iron Man' and drone swarms: It's the new arms race The technological advancements disrupting businesses are now shaking up the world of war — where robotic fighters and weapons enhanced by artificial intelligence might rule the skies and seas. And just as with industry, the advantages may be fleeting. By Christian Davenport  •  Read more »   ADVERTISEMENT   Opinions   Trump is woefully ignorant about minority youth in America By Colbert I. King  •  Read more »   Repeat, retreat, reload: Why can't we do something sensible about guns? By Kathleen Parker  •  Read more »   No to making 'yes mean yes' the standard for determining rape By Molly Roberts  •  Read more »   The menacing Trump is a danger we can confront By Ruth Marcus  •  Read more »   Orlando, Jo Cox and the deadly ideas that shape our world By Anne Applebaum  •  Read more »   The U.S. has a responsibility to help to solve the refugee crisis By Editorial Board  •  Read more » ADVERTISEMENT   More News   Accused killer of British lawmaker tells court his name is 'death to traitors' The statement of Thomas Mair — who also declared "freedom for Britain" in his first court appearance since the killing — adds credence to the theory that Jo Cox, a rising star in Parliament, was slain in a far-right attack. By Griff Witte and Karla Adam  •  Read more » Amid scandals, Oakland loses its third police chief in just over a week The latest chief stepped down after just two days leading a department rocked by allegations that a number of officers had sex with a teenage prostitute and exchanged racist text messages. By Associated Press  •  Read more » 'State of calamity' declared for Rio weeks before Summer Olympics In a plea for help from Brazil's federal government, the state that will host the Games warned of "total collapse in public security, health, education, transport and environmental management." By Dom Phillips  •  Read more » 'That boy was born flippin': Donnell Whittenburg closes in on stardom, one vault at a time In Baltimore's inner city, his mother first thought the idea of gymnastics was crazy, something for white suburbanites. Now the boy who once used her house like a jungle gym is considered a legitimate medal threat for this year's Summer Games. By Dave Sheinin  •  Read more » 'Flash Boys' plan for a slower stock market gets green light from the SEC Regulators approved IEX's application for a national exchange where high-frequency traders would not have an advantage. But other Wall Street firms warned that the company lionized in the book "Flash Boys" would wreak havoc on stock trading. By Renae Merle  •  Read more » Belgian authorities arrest 12 in sweeping anti-terrorism raids The late-night raids on "dozens" of houses and 152 garages came at a time of heightened terrorism fears in Europe. By Michael Birnbaum  •  Read more » The U.S. is powering up its first new nuclear reactor in decades Climate change and upheaval in the nuclear industry have made the new reactor — the first in the country since its sister facility was licensed in 1996 — a very big deal. By Chris Mooney  •  Read more » The president mourns — and then keeps moving The Obamas' long-planned trip to New Mexico and California this weekend was to mark the 100th anniversary of the national park system's creation. It fell a day after the president visited a memorial to the Orlando shooting victims. By David Nakamura  •  Read more » The man who showed Donald Trump how to exploit power and instill fear Reporting for The Post's coming biography on Trump nominee reveals how famed lawyer Roy Cohn, years after fighting battles for Sen. Joseph McCarthy, showed Donald Trump a blueprint for power. By Robert O'Harrow Jr. and Shawn Boburg  •  Read more » Apprehensive but ready for adventure After being widowed in their 40s, they're now both focused on their passions. By Amanda McGrath  •  Read more » Fatherhood, the second time around Dads who viewed their main role as breadwinners in the past now are raising young children, with whom they interact differently. By Bonnie Miller Rubin  •  Read more »         Share Today's Headlines:       Twitter      Facebook Trouble reading? Click here to view in your browser. You received this email because you are signed up for Headlines. For additional free newsletters or to manage your newsletters, click here. We respect your privacy. If you believe that this email has been sent to you in error or you no longer wish to receive email from The Washington Post, click here. Contact us for help. ©2016 The Washington Post, 1301 K St NW, Washington DC 20071