A dirty bomb or radiological dispersal device is a radiological weapon that combines radioactive material with conventional explosives. The purpose of the weapon is to contaminate the area around the dispersal agent/conventional explosion with radioactive material, serving primarily as an area denial device against civilians. It is not to be confused with a nuclear explosion, such as a fission bomb, which produces blast effects far in excess of what is achievable by the use of conventional explosives. Unlike the cloud of radiation from a typical fission bomb, a dirty bomb's radiation can be dispersed only within a few hundred meters or a few miles of the explosion.
A car bomb, bus bomb, van bomb, lorry bomb, or truck bomb, also known as a vehicle-borne improvised explosive device (VBIED), is an improvised explosive device designed to be detonated in an automobile or other vehicles.
An improvised explosive device (IED) is a bomb constructed and deployed in ways other than in conventional military action. It may be constructed of conventional military explosives, such as an artillery shell, attached to a detonating mechanism. IEDs are commonly used as roadside bombs, or homemade bombs.
A bollard is a sturdy, short, vertical post. The term originally referred to a post on a ship or quay used principally for mooring boats. In modern usage, it also refers to posts installed to control road traffic and posts designed to prevent automotive vehicles from colliding or crashing into pedestrians and structures.
Guard rails, guardrails, railings or protective guarding, in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence. Common shapes are flat, rounded edge, and tubular in horizontal railings, whereas tetraform spear-headed or ball-finialled are most common in vertical railings around homes. Park and garden railings commonly in metalworking feature swirls, leaves, plate metal areas and/or motifs particularly on and beside gates.
Traffic barriers keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains, or from traversing steep (non-recoverable) slopes or entering deep water. They are also installed within medians of divided highways to prevent errant vehicles from entering the opposing carriageway of traffic and help to reduce head-on collisions. Some of these barriers, designed to be struck from either side, are called median barriers. Traffic barriers can also be used to protect vulnerable areas like school yards, pedestrian zones, and fuel tanks from errant vehicles. In pedestrian zones, like school yards, they also prevent children or other pedestrians from running onto the road.
Terrorist tactics tend to favor attacks that avoid effective countermeasures and exploit vulnerabilities.
Barrack buster is the colloquial name given to several improvised mortars, developed in the 1990s by the engineering unit of the Provisional Irish Republican Army (IRA).
The Glasgow Airport attack was a terrorist ramming attack which occurred on 30 June 2007, at 15:11 BST, when a dark green Jeep Cherokee loaded with propane canisters was driven at the glass doors of the Glasgow Airport terminal and set ablaze. The car's driver was severely burnt in the ensuing fire, and five members of the public were injured, none seriously. Some injuries were sustained by those assisting the police in detaining the occupants. A close link was quickly established to the 2007 London car bombs the previous day.
Target hardening, also referred to simply as hardening when made clear by the context, is a term used by police officers, those working in security, and the military referring to the strengthening of the security of a building or installation in order to protect it in the event of attack or reduce the risk of theft. It is believed that a "strong, visible defense will deter or delay an attack".
Operation Phantom Phoenix was a major nationwide offensive launched by the Multinational Force Iraq (MNF-I) on 8 January 2008 in an attempt to build on the success of the two previous corps-level operations, Operation Phantom Thunder and Operation Phantom Strike and further reduce violence and secure Iraq's population, particularly in the capital Baghdad. The offensive consisted of a number of joint Coalition and Iraqi Army operations throughout northern Iraq as well as in the southern Baghdad Belts.
Standoff distance is a security term that refers to measures to prevent unscreened and potentially threatening people and vehicles from approaching within a certain distance of a building, car, or other shelter, roadblock or other location, or to a person such as a law enforcement officer or VIP, or to a friendly area / location.
Corporation Street is a major thoroughfare in Manchester city centre, England. It runs from Dantzic Street to the junction of Cross Street and Market Street. Major buildings located on or adjacent to the street include the Arndale Centre, Exchange Square, The Printworks, Urbis and New Century House next to the CIS Tower.
On 5 November 2014, in a terrorist ramming attack, a Hamas operative deliberately drove a van at high speed into a crowd of people waiting at the Shimon HaTzadik light rail station in the Arzei HaBira neighborhood of Jerusalem.
A vehicle-ramming attack, also known as a vehicle as a weapon or VAW attack, is an assault in which a perpetrator deliberately rams a vehicle into a building, people, or another vehicle. According to Stratfor Global Intelligence analysts, this attack represents a relatively new militant tactic that could prove more difficult to prevent than suicide bombings.
On 21 December 2014, a Muslim man in the French city of Dijon was arrested after a vehicle-ramming attack in which he drove a van into pedestrians in five areas of the city in the space of half an hour. Thirteen people were injured, two of them seriously.
On 31 May 2017, a truck bomb exploded in a crowded intersection in Kabul, Afghanistan, near the German embassy at about 08:25 local time during rush hour, killing over 150 and injuring 413, mostly civilians, and damaging several buildings in the embassy. The attack was the deadliest terror attack to take place in Kabul. The diplomatic quarter—in which the attack took place—is one of the most heavily fortified areas in the city, with three-meter-high (10 ft) blast walls, and access requires passing through several checkpoints. The explosion created a crater about 4.5 meters (15 ft) wide and 30 feet deep. Afghanistan's intelligence agency NDS claimed that the blast was planned by the Haqqani Network. Although no group has claimed responsibility, the Afghan Taliban are also a suspect but they have denied involvement and condemned the attack. It was the single largest attack on the city up till that point.
On 3 June 2017, a terrorist vehicle-ramming and stabbing took place in London, England. A van was deliberately driven into pedestrians on London Bridge, and then crashed on Borough High Street, just south of the River Thames. The van's three occupants then ran to the nearby Borough Market area and began stabbing people in and around restaurants and pubs. They were shot dead by Metropolitan Police and City of London Police authorised firearms officers, and were found to be wearing fake explosive vests. Eight people were killed and 48 were injured, including members of the public and four unarmed police officers who attempted to stop the assailants. British authorities described the perpetrators as "radical Islamist terrorists".
On 23 June 2017, a series of terrorist attacks took place in Pakistan resulting in 96 dead and over 200 wounded. They included a suicide bombing in Quetta targeting policemen, followed by a double bombing at a market in Parachinar, and the targeted killing of four policemen in Karachi.
The Jalalabad prison break was a coordinated attack and prison break conducted by the Islamic State – Khorasan Province (ISIS–K) on 2 August 2020 which targeted Jalalabad Prison in the provincial capital of Nangarhar Province in eastern Afghanistan. The attack, which intended to free other members of ISIS–K previously incarcerated by the Afghan government, has been described by counterterrorism analysts as "a highly sophisticated [...] coordinated assault" and in 2023 as "one of [ISIS–K's] most sophisticated and ambitious attacks to date."
