Opinions P.M.: Trump's attacks on other Republicans matter. They show he is unfit for the presidency.

Sponsored by Qualcomm | We really have four parties, so why not four candidates?; In ‘Game of Thrones,’ it’s time to start rooting for the White Walkers; Vince Foster was my brother. Donald Trump should be ashamed.; Is the Bernie-Trump debate a great idea or a terrible idea? Yes.; Everybody thinks colonizing Mars is practical, but this other thing, imposserous!; Romania's interim prime minister: 'Expectations are high'; Trump’s attacks on other Republicans matter. They show he is unfit for the presidency.; Trump's New Mexico setback; Amazing dogs that change the lives of children with disabilities; The long struggle over the legal bounds of fighting terrorism; Was this Olympic star as saintly as he appeared?; Forget forbidden pleasures: Find joy in everyday comforts; The self-deprecating titan behind Alibaba; Romney has no more excuses; Trump specializes in infighting;     We really have four parties, so why not four candidates? Blowing up the two-party system By Jennifer Rubin  •  Right Turn  •  Read more » In ‘Game of Thrones,’ it’s time to start rooting for the White Walkers Turning the Iron Throne to ice might seem cruel. But humanity's not looking so great on "Game of Thrones." By Sonny Bunch  •  Act Four  •  Read more »   Vince Foster was my brother. Donald Trump should be ashamed. I can't let his irresponsible revival of a conspiracy theory pass without comment. By Sheila Foster Anthony  •  Read more »   Is the Bernie-Trump debate a great idea or a terrible idea? Yes. This is doubleplusungood. By Alexandra Petri  •  ComPost  •  Read more »   ADVERTISEMENT   Everybody thinks colonizing Mars is practical, but this other thing, imposserous! The can do/ can't do paradox. By Tom Toles  •  Read more »   Romania's interim prime minister: 'Expectations are high' An interview with Dacian Ciolos. Read more »   Trump’s attacks on other Republicans matter. They show he is unfit for the presidency. What would it be like to have a president who can never let go of a grudge? By Paul Waldman  •  The Plum Line  •  Read more »   Trump's New Mexico setback This Trump blunder will be harder for Republicans to forget than most of his other boneheaded remarks, simply because it reinforces so many of the concerns Republicans have about Trump. By Ed Rogers  •  PostPartisan  •  Read more » Amazing dogs that change the lives of children with disabilities Melissa Fay Greene explores the remarkable feats of specially trained aid dogs. By Kerry Lauerman  •  Read more »   The long struggle over the legal bounds of fighting terrorism Karen J. Greenberg assesses tough compromises over justice in an era of terrorist conflict. By Deborah Pearlstein  •  Read more »   Was this Olympic star as saintly as he appeared? Duncan Hamilton explores the life and achievements of Eric Liddell. By Steven V. Roberts  •  Read more »   Forget forbidden pleasures: Find joy in everyday comforts Adam Phillips steers us away from grappling with dark desires to embrace ordinary delights. By Michael S. Roth  •  Read more »   ADVERTISEMENT   The self-deprecating titan behind Alibaba Duncan Clark tells Jack Ma's tale, from cultural revolution fears to digital riches. By Fred Vogelstein  •  Read more »   Romney has no more excuses Will Romney answer the call? By Jennifer Rubin  •  Right Turn  •  Read more »   Trump specializes in infighting Trump makes new enemies every day By Jennifer Rubin  •  Right Turn  •  Read more »   Recommended for you   In Theory Emerging ideas and the arguments behind the news. Sign Up »         Share Opinions P.M.:       Twitter      Facebook Trouble reading? Click here to view in your browser. You received this email because you are signed up for Opinions. 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