Latest Nation headlines

Obama faults FBI director on e-mail inquiry

Obama’s comments about James Comey were striking for a president who has insisted he does not comment on FBI investigations.

Iowa police arrest suspect in ‘ambush’ killings of 2 officers

The officers shot and killed early Wednesday were apparently caught by surprise and had no chance to defend themselves or return fire, authorities said.

Boom times

Thursday: P.M. rain, thunder; high 60-65, low 41-46

Black Church Burned in Mississippi, With ‘Vote Trump’ Scrawled on Side

A predominantly African-American church in Greenville, Mississippi, was badly burned on Tuesday evening, with the words “Vote Trump” spray-painted on the side of the building, an incident that comes amid rising concerns over possible violence in the final days of a polarizing and racially charged presidential race.

Some immune-boosting cancer drugs may pose rare heart risks

Doctors have found a disturbing downside to some powerful new drugs that harness the immune system to fight cancer: In rare cases, they may cause potentially fatal heart damage, especially when used together.

Obama says alternate routes being reviewed for Dakota pipeline

President Obama called on both sides to show restraint, and revealed that the Army Corps of Engineers was considering an alternative route for the project.

JFK: 50 Years Later

Special section

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A five-part series examining the profound impact of former President John F. Kennedy’s assassination.

Globe Investigations

Special section

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/10/01/BostonGlobe.com/Special/Images/magnifying_glass1500618-081--90x90.jpg Recent investigative reports

Read recent stories and ongoing investigations from the Globe’s journalists.

Gay marriage in the US

Interactive Graphic

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/08/01/BostonGlobe.com/National/Images/Untitled-12.jpg Timeline of gay marriage in US

In the early 1970s, there were zero states banning or allowing same-sex marriage. Now it’s legal nationwide, and all bans have been overturned.

Instagram

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/12/17/BostonGlobe.com/Metro/Images/a4a68392593311e3a80a0a154a02c3a8_7-7210--90x90.jpg Boston Globe Instagram photos

A live stream of Instagram posts from The Boston Globe photo department.