Iran-backed militias take lead in Iraqi offensive

A Shi'ite fighter raised his arms in the town of Hamrin in the Salahuddin province on Thursday.

REUTERS

Iran’s powerful influence in Iraq has been on display as the counteroffensive against Islamic State militants around Tikrit has unfolded in recent days.

Despite repeated attempts by Twitter to thwart the Islamic State’s online recruiting, sympathizers have maintained thousands of active accounts on the social network.

ISIS masters Twitter, study reveals

The Islamic State has been astonishingly successful at spreading its message using 21st-century social media, a study found.

Latest World headlines

Holi Celebrations 2015

Holi is a festival that marks events in Hindu mythology and provides photographers with a colorful visual feast.

Liberia hails release of potentially its last Ebola patient

A 58-year old teacher left a treatment center Thursday, beginning Liberia’s countdown to being declared Ebola free.

US popularity of Pope Francis at new peak

Nine in 10 US Catholics say they have a favorable view of Francis, including nearly six in 10 who have a “very favorable” view, according to a report.

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Opinion

Drew Faust

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/03/06/BostonGlobe.com/ReceivedContent/Images/AP657892525435.jpg Hope, history, and Selma

Harvard University President Drew Faust recalls marching in Selma, Ala., 50 years ago.

Crux

Crux

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/01/19/BostonGlobe.com/Foreign/Images/2015-01-19T091047Z_337372364_GM1EB1J1BJ501_RTRMADP_3_POPE-PHILIPPINES.jpg Pope will accept invitation to address Congress, report says

Pope Francis will address a joint session of Congress before his visit to Philadelphia in September.

Antipsychotic drugs in nursing homes

SPECIAL REPORT

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2012/04/29/BostonGlobe.com/HealthScience/Advance/Images/29nursing--90x90.jpg A rampant prescription, a hidden peril

Federal data obtained by the Globe show many nursing homes make heavy use of antipsychotic drugs to pacify residents.

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.