US issues warning on Europe travel after Brussels attacks

At least 34 died and dozens more were wounded in bombings in Brussels that showed the continent?s vulnerability to such attacks.

Pierre Terdjman/New York Times

Mourners gathered at the stock exchange in Brussels on Tuesday night.

White House Photo

President Obama and National Security Adviser Susan Rice listened to a briefing.

Bryan Thomas/New York Times

The spire of One World Trade Center in New York was lit in solidarity with Belgium.

Rome?s Trevi fountain was illuminated in tribute to the Belgium victims.

STEFANO RELLANDINI/Reuters

Rome?s Trevi fountain was illuminated in tribute to the Belgium victims.

Passengers and airport staff were evacuated from the terminal building.

OLIVIER HOSLET/european pressphoto agency

Two women hugged as evacuations were underway at the terminal building.

Authorities say these two men were apparently the airport suicide bombers.

Belgian Federal Police via AFP

Authorities say these two men were apparently the airport suicide bombers.

In this image provided by the Belgian Federal Police in Brussels on Tuesday, March 22, 2016, a man who is suspected of taking part in the attacks at Belgium's Zaventem Airport and is being sought by police. Bombs exploded at the Brussels airport and one of the city's metro stations Tuesday, killing and wounding scores of people, as a European capital was again locked down amid heightened security threats. (Belgian Federal Police via AP)

Belgian Federal Police via AP

Authorities believe this man took part in the attacks at the Brussels airport.

The Eiffel Tower was seen with the black, yellow and red colors of the Belgian flag in Paris.

Ian Langsdon/European PressPhoto Agency

The Eiffel Tower was seen with the black, yellow and red colors of the Belgian flag in Paris.

Germany?s Brandenburg Gate was illuminated in the colors of the Belgian flag.

FABRIZIO BENSCH/Reuters

Germany?s Brandenburg Gate was illuminated in the colors of the Belgian flag.

BRUSSEL SLIDER2 A man places a Belgian flag on a memorial in Brussels following bomb attacks s in Brussels, Belgium, March 22, 2016. REUTERS/Charles Platiau

CHARLES PLATIAU/REUTERS

A man placed a Belgian flag on a memorial.

Injured women were seen in Brussels Airport

Ketevan Kardava/Georgian Public Broadcaster

Injured women were seen in the airport.

In an image made from video, emergency rescue workers stretcher an unidentified person at the site of an explosion.via AP)

In an image made from video, rescue workers placed an unidentified person on a stretcher.

An injured man lies on the floor in Brussels Airport.

Ketevan Kardava/Georgian Public Broadcaster

An injured man lay on the floor in the airport.

The blown out windows of Zaventem airport are seen after a deadly attack in Brussel.

The blown-out windows of the Zaventem airport were seen after a deadly attack in Brussels.

A victim received first aid by rescuers.

EMMANUEL DUNAND/AFP/GETTY IMAGES

A victim received first aid by rescuers.

A private security guard helped a wounded woman outside the Maalbeek metro station.

MICHAEL VILLA/afp/getty images

A private security guard helped a wounded woman outside the Maalbeek metro station.

epa05226326 US President Barack Obama (C), First Lady Michelle Obama (L) and President of Cuba Raul Castro (R) attend a Major League Baseball exhibition game between the Tampa Bay Rays and the Cuban national team at the Estadio Latinoamericano (Latin American Stadium) in Havana, Cuba, 22 March 2016. Obama is on an official visit to Cuba from 20 to 22 March 2016, the first sitting US president to visit since Calvin Coolidge 88 years ago. EPA/MICHAEL REYNOLDS

Obama praises way Ortiz, Boston responded to terrorism in 2013

The president spoke while attending a baseball game in Havana the same day as terrorist attacks in Belgium.

From left: Lauren Cleary, 19, of Abington; Monica Hall, 19, of Sutton; and Cate Duffy, 19, of Natick.

3 Mass. students recount moments of panic after blasts

Lauren Cleary, Monica Hall, and Cate Duffy were purchasing tickets to London at the Brussels airport when the bombs went off nearby.

Donald Trump and Hillary Clinton.

Clinton, Trump offer contrasting responses to Brussels attacks

Donald Trump renewed his call for an aggressive response while Hillary Clinton said ?steady, strong, smart hands?? are needed.

Mormon missionaries Mason Wells, 19, of Sandy, Utah (left) and Joseph Empey, 20, of Santa Clara, Utah were both injured in Tuesday's explosion at the Brussels airport.

Mormon missionary wounded in Brussels was also at Boston bombing

Mason Wells, 19, who was injured at the Brussels airport, was also a block away when bombs went off at the Boston Marathon finish line.

Evan Horowitz | Quick Study

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/22/BostonGlobe.com/Politics/Images/horowitz-320.jpg Why terrorism flourishes in Brussels

The city has ties to nearly every major terrorist plot of the last decade.

Employees worked in HubSpot?s Cambridge office.

Keith Bedford/Globe Staff/File

HubSpot book is unflattering portrait of Cambridge company

The former employee?s book shows a hard-driving workplace full of office politics and backstabbing.

Q&A

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/18/BostonGlobe.com/Lifestyle/Images/unnamedA.jpg Jonathan Gold on food, and what it says about LA

The Los Angeles Times critic is just as likely to find excellence in a taqueria as a Michelin-starred restaurant.

Donald Trump, a Republican presidential hopeful, during a news conference at the soon-to-be Trump International Hotel, at the site of the Old Post Office in Washington, March 21, 2016. (Doug Mills/The New York Times)

wire images

Trump, Clinton win primaries in Arizona

Donald Trump and Hillary Clinton won primaries in Arizona, and other elections were occurring in Utah and Idaho.

Two people shot on Mount Auburn Street in Cambridge

Police said two males were shot and were hospitalized with serious injuries Tuesday night.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/18/BostonGlobe.com/Metro/Images/20slots2_met.jpg Casino?s online slots may mislead by being easier to win

An online game designed to lure customers to Plainridge Park Casino is troubling to critics of problem gambling.

Shirley Leung

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/23/BostonGlobe.com/Business/Images/shirley-5953.jpg Meet the new boss on the waterfront

Kathy Abbott is the new CEO of Boston Harbor Now, formed by two nonprofits that share a love of the harbor.

Boston playwright Melinda Lopez (left) during a 2011 visit to the town where her parents lived in Cuba. With her are Juanita Miranda ? holding a photo of Lopez as a baby ? and her husband, Alfonso, in front of their home.

Obama highlights Boston playwright?s Cuban connection

Boston playwright-actress Melinda Lopez was cited in a vivid anecdote in President Obama?s historic speech from Havana.

Sponsored by Rockland Trust

In business, planning makes perfect

When starting or growing a business, having a written plan in place can be integral to its success. Learn from experts how to best approach this important first step.

This content was produced by Boston Globe Media in collaboration with the advertiser. The news and editorial departments of The Boston Globe had no role in its production or display.

Globe investigations

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/11/BostonGlobe.com/Metro/Images/Geoghan[1].jpg Key reports from Globe?s Spotlight team on clergy sex abuse

The Boston Globe?s 2001-2002 investigation into sexual abuses by clergy in the Catholic Church resulted in more than 600 stories.

The story behind 'Spotlight'

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/11/18/BostonGlobe.com/Metro/Images/spotlight-9497.jpg Boston Globe coverage and the movie ?Spotlight?

?Spotlight? is based on the stories and the reporters behind the investigation of sexual abuse in the Catholic Church.

BetaBoston

BetaBoston

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/21/BostonGlobe.com/Business/Images/2016-03-21/Granary-Burying-Ground.jpg Building a tombstone for the digital grave

Dave Balter has raised $1.5 million in seed investment for Mylestoned, a startup that aims to build a more modern way to remember the dearly departed.

Crux

JOHN L. ALLEN JR. | ALL THINGS CATHOLIC

//c.o0bg.com/rf/image_90x90/Boston/Production/BostonGlobe.com/WebPages/Homepage/Components/allen-189.jpg An Australian lesson in telling the whole Catholic story

There are salt-of-the-earth folks, who quietly carry out a staggering variety of good works.

Design New England

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2016/03/16/BostonGlobe.com/Lifestyle/Images/DNEsensation.jpg Circular Sensation

A one-of-a-kind design combines aesthetics and functionality for harmonious living.