Dear DHS: Terrorism

Terrorism
Al Queda, al-Qaeda, al-Qaida, etc.
Terror
Attack
Iraq
Afghanistan
Iran
Pakistan
Agro
Environmental terrorist
Eco terrorism
Conventional weapon
Target
Weapons grade
Dirty bomb
Enriched
Nuclear
Chemical weapon
Biological weapon
Ammonium nitrate
Improvised explosive device
IED (Improvised Explosive Device)
Abu Sayyaf
Hamas
FARC (Armed Revolutionary Forces Colombia)
IRA (Irish Republican Army)
ETA (Euskadi ta Askatasuna)
Basque Separatists
Hezbollah
Tamil Tiger
PLF (Palestine Liberation Front)
PLO (Palestine Libration Organization)
Car bomb
Jihad
Taliban
Weapons cache
Suicide bomber
Suicide attack
Suspicious substance
AQAP (Al Qaeda Arabian Peninsula)
AQIM (Al Qaeda in the Islamic Maghreb)
TTP (Tehrik-i-Taliban Pakistan)
Yemen
Pirates
Extremism
Somalia
Nigeria
Radicals
Al-Shabaab
Home grown
Plot
Nationalist
Recruitment
Fundamentalism
Islamist