U.S. House Speaker John Boehner, a Republican from Ohio, speaks during his weekly news conference at the Capitol in Washington, D.C., U.S., on Thursday, June 19, 2014. Boehner said terrorism has spread "exponentially" during President Barack Obama's administration and that Obama needs an "overall strategy" to stem the rise of terrorism in the Middle East. Photographer: Pete Marovich/Bloomberg via Getty Images
Ahmad Al-Rubaye—AFP/Getty Images
A member of the Iraqi anti-terrorism forces waves the national flag in celebration after securing a checkpoint from Sunni militants in the village of Badriyah, west of Mosul on Aug. 19, 2014.
A total of 232 people who “circulated videos promoting terrorism through the Internet and on portable devices” have been detained by police in China northwest Xinjiang province.
STR / AFP / Getty Images
An anti-terrorism force including public security police and the armed police attend an anti-terrorism joint exercise in Hami, northwest China's Xinjiang region on July 2, 2013.
Larry Downing / REUTERS
President Barack Obama talks about his administration's counter-terrorism policy at the National Defense University at Fort McNair in Washington, May 23, 2013.
Simon Shuster / TIME
Cemetery in the village of Utamysh, in the southern Russian region of Dagestan, where locals buried the Canadian citizen William Plotnikov after he was killed in a shootout with Russian counter-terrorism forces in July 2012. Photo taken April 26, 2013.
FILE - In this Monday, April 15, 2013 file photo, a South Korean army soldier aims his machine gun during an anti-terrorism drill against possible terrorists' attacks at a subway station in Seoul, South Korea. In his 16 months on the job, North Korean leader Kim Jong Un’s government has raised fears with unusually aggressive threats against Seoul and Washington, and it’s not clear whether he will be able to pull back, a feat perfected by his late father, considered a master at brinkmanship. The mystery surrounding Kim's intentions has some outsiders predicting nightmare scenarios. (AP Photo/Ahn Young-joon, File)
Photograph by Jeff Hutchens-Reportage / Getty Images for Time
A local community debates the creation of a United States State Department anti-terrorism training facility on farmland adjacent to their homes in Ruthsburg, Maryland. The residents against the facility claim the driving tracks, firing ranges and explosive charges at the facility would destroy the quiet of the community of roughly 400 residents.
Jewel Samad / AFP / Getty Images
Terrorism suspect Faisal Shahzad, seen on a TV screen as Attorney General Eric Holder, Homeland Security Secretary Janet Napolitano, FBI Deputy Director John S. Pistole and New York City Police Commissioner Ray Kelly hold a briefing regarding the investigation into the Times Square bomb plot in Washington on May 4, 2010
Maxim Marmur / AFP / Getty
A counter-terrorism exercise of Shanghai Cooperation Organization.
Stan Honda / AFP / Getty Images
A terrorism drill in New Jersey.
STEVE RUSSEL / CP PHOTO / TORONTO STAR
Officials bring in a terrorism suspect at the Durham Regional Police station in Pickering, Ont.
Images glorifying terrorism aim to inspire insurgents
The Nigerians United Against Terrorism group attend a demonstration calling on the government to rescue the kidnapped girls of the government secondary school in Chibok, May 26, 2014 in Abuja.
Handout picture of Saudi fugitive Ibrahim Hassan al-Asiri as seen at the Saudi interior ministry of the most wanted terror suspects. A Saudi bombmaker believed to be working with al Qaeda's Yemen-based wing is a key suspect in the parcel bomb plot against the United States, a U.S. official said on October 30, 2010. Asiri, who tops a Saudi Arabian terrorism wanted list, is the brother of a suicide bomber killed last year in a bid to assassinate Saudi counter-terrorism chief Prince Mohammed bin Nayef. REUTERS/Saudi Interior Ministry/Handout (SAUDI ARABIA - Tags: POLITICS IMAGES OF THE DAY) THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS - RTXU32E
Larry Downing / REUTERS
U.S. President Barack Obama makes a point about his administration's counter-terrorism policy at the National Defense University at Fort McNair in Washington, May 23, 2013.
Members of Indonesia's elite anti-terrorism squad walk at a village where a suspected terrorist hideout was raided in Klaten, Central Java, Indonesia, Wednesday, June 23, 2010. The elite anti-terrorism squad arrested Indonesia's most wanted man and two other suspects Wednesday after raiding their hide-out on the country's main island of Java, police and witnesses said.
Dan Kitwood / Getty
Shaikh Muhammad Tahir-ul-Qadri delivers a fatwa against terrorism at the Institution of Mechanical Engineers in London on March 2, 2010
Brooks Kraft / Corbis for TIME
Bush and Cheney, pictured in October 2001, planned the war on terrorism but broke over whether to pardon one of its key architects
Left; Janet Hamlin / AFP / Getty: AP
Terrorism suspects Khalid Sheikh Mohammed, left, and Abu Zubaydah
Christopher Morris / VII for TIME
The National Counterterrorism Center (NCTC) in Virginia. the NCTC has elements of the FBI and CIA where terrorism-related information is shared on a real-time basis.
SHAHIDUL ALAM / DRIK FOR TIME
FIGHTER: Zia has led the belated battle against terrorism
ANGER AND GRIEF: Demonstrators rally against terrorism in Moscow's Red Square.
Captives from last week's raid: "Pakistan is determined to root out terrorism"
Bruno Fahy—AFP/Getty Images
Journalists and residents stand near police vehicles as police set a large security perimeter in the city center of Verviers on Jan. 15, 2015, during a "jihadist-related" anti-terrorism operation.
Senate Intelligence Committee Chairwoman Dianne Feinstein discusses a newly released Intelligence Committee report on the CIA's anti-terrorism tactics, in a speech on the floor of the U.S. Senate on Capitol Hill in Washington on Dec. 9, 2014.
Senate Intelligence Committee Chairwoman Dianne Feinstein discusses a newly released Intelligence Committee report on the CIA's anti-terrorism tactics, in the U.S. Senate in Washington, Dec. 9, 2014.
Nigeria's President Goodluck Jonathan attends the Africa Union Peace and Security Council Summit on Terrorism at the Kenyatta International Convention Centre in Nairobi on Sept. 2, 2014
Head of the Mohammad Rasulallah Revolutionary guard base, Hossein Hamedani, attends a conference to mark the martyrs of terrorism in Tehran on Sept. 6, 2011.
Las Vegas Metropolitan Police Department / AP
This image provided by the Las Vegas Metropolitan Police Department shows David Allen Brutsche, 42, who was arrested on domestic terrorism charges in Las Vegas.
Victor Biro / SHIFT Digital / ZUMA PRESS
An Royal Canadian Mounted Police officer stands in the rear of 359 Cherokee Blvd in north Toronto after seizing property in connection with an alleged Al-Qaeda sponsored terrorism plot to derail a passenger train between New York City and Toronto, Apr 22, 2013.
Timothy A. Clary / AFP / Getty Images
New York City Police Department Counter Terrorism Unit officers patrol in Times Square on May 5, 2010
AP / Drug Enforcement Administration
Russian arms trafficking suspect Viktor Bout, center, is in U.S. custody after being extradited from Thailand to face terrorism charges in New York.
Saudi Interior Ministry / Reuters
Ibrahim Hassan al-Asiri, a fugitive Saudi bombmaker who is believed to be working with al-Qaeda's Yemen-based terrorism cell and is a key suspect in the parcel-bomb plot against the U.S.
Mohammed Huwais / AFP / Getty Images
Mansur Shabwani Dalil, left, and Hedi Mubarak al-Saleh, both suspected al-Qaeda members, await trial in a Yemeni court specializing in terrorism on July 4, 2010
Pakistan President Pervez Musharraf addressed the nation on Saturday hours after imposing emergency rule, saying terrorism and extremism had reached their limit and his country's sovereignty was at stake.
KIERAN DOHERTY / REUTERS
The Great Unknown: A plane takes off from Gatwick Airport outside London the day after a major counter-terrorism sting.
YURI KOZYREV FOR TIME
FIRING RANGE: Iraq's elite Counter Terrorism Force trains in Baghdad
PHOTOGRAPH FOR TIME BY JOHN STANMEYERVII
TAKING CHARGE: Indonesia's new President, Susilo Bambang Yudhoyono, says he will crack down on terrorism and corruption
Signs point the way within the Counter-terrorism Center's maze of offices
Powell speaks on 'Patterns of Global Terrorism'
Abubakar Ba'asyir, leader of the Indonesian Mujahidin Council, denies any
involvement in international terrorism
Bush signs the anti-terrorism bill into law
Australian Federal Police Deputy Commissioner Michael Phelan speaks to the media that two Sydney men have been arrested by the Joint Counter Terrorism team in Sydney on Dec. 24, 2014
Lewis Whyld / AP
Police outside Westminster Magistrates' Court, London, as nine men arrive to appear in court charged with conspiracy to cause explosions in the United Kingdom other terrorism offences Monday Dec. 27, 2010.
Giuseppe Cacace / AFP / Getty
Italian prosecutor Armando Spataro speaks to a Milan court on Nov. 4, 2009, at the end of the trial of 26 Americans in the 2003 abduction of terrorism suspect Osama Moustafa Hassan Nasr