1970s
Major attacks during this period include the bombing of SwissAir flight 330 by Palestinian extremists, along with several attacks carried out by the Irish Republican Army.
This was also the decade when narco terrorism and left-wing extremism gained more prominence in Colombia, claiming hundreds of lives.
The ‘Dirty War’ in Argentina and ‘Years of Lead’ in Italy resulted in hundreds of attacks. Euskadi Ta Askatasuna(ETA) carried out multiple attacks in Spain during this time period.
1980s
Right wing narco-terrorists and left-wing revolutionary guerrilla fighters inflicted a large number of attacks in nations like Colombia and Peru during this time period. Attacks by IRA and ETA continued in the United Kingdom and Spain respectively.
Multiple instances of state-sponsored terrorism occurred in El Salvador during this period. Pro-Khalistan extremists carried out multiple attacks in Punjab (India). Various Middle Eastern factions carried out shootings and bombings in France, mainly in Paris.
1990s
Nationalist extremists from the Basque, Breton and Corsican communities carried out a number of assassinations and targeted bomb attacks in France in the 1990s. Islamic militancy gained prominence in India, which led to a spate of attacks in Kashmir.
Number of attacks in Colombia escalated sharply during this period as FARC gained more influence. Islamic terrorists carried out a number of attacks in Philippines in the 1990s. More than 500 attacks were reported from West Bank and Gaza in this decade.
2000s
With 9/11 attacks, focus of terrorism shifted squarely to Afghanistan. Colombia continued to reel under extremist attacks, with more than 1000 attacks reported on its soil.
Number of terror attacks rose sharply in India, the most infamous being the attack on Mumbai in 2008.
Terror-related incidents shot up in Iraq, after US-led forces captured the country and displaced Saddam Hussein. The South Thailand insurgency also flared up and became more violent during this decade.
2010s
Iraq, Afghanistan and Pakistan registered by far the maximum number of attacks during this time period, with 19286, 10658 and 10571 attacks in their respective territories.
Islamic State of Syria and Levant (ISIL, also known as ISIS or IS), came into prominence after the outbreak of the civil war in Syria. Since then, ISIL has carried out thousands of attacks in Iraq and Syria, and has managed to recruit and influence supporters from different parts of the world.
In Nigeria, Boko Haram carried out several attacks, killing thousands.