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British Prime Minister David Cameron and London Mayor Boris Johnson during a ceremony at the memorial to the victims of the July 7 2005 London bombings, in Hyde Park on Tuesday in London, England
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Members of the emergency services take part in Exercise Strong Tower outside the disused Aldywch tube station on Surrey Street on Tuesday in London, England
Indian police pay tribute to the victims of the Mumbai terror attacks at a Mumbai memorial on Wednesday. More than 160 people, including 26 foreign nationals, died in the three-day attack six years ago
South Korean soldiers participate in an anti-terror drill ahead of the 4th Asian Indoor and Martial Arts Games, which starts from the end of June, in Incheon, west of Seoul, South Korea. The drills were held against possible terrorist attacks following the Boston Marathon bombings.
Yemeni al-Qaeda militants listen as a judge sentences them to jail for plotting attacks in Yemen at the Sana’a court. The court handed out jail sentences ranging between four and 10 years, on charges of forming an armed group to carry out attacks against military, government buildings and foreign interests in Yemen.
Miller, a Transit Police dog, watches commuters at Back Bay Station a day after two explosions in Boston. Miller, a Transit Police dog with the Massachusetts Transportation Authority Explosives Detection Unit, watches as commuters enter the subway system at Back Bay Station a day after two explosions near the finish line of the Boston Marathon in Boston, Massachusetts April 16, 2013.