Well yes we can agree on this.
The issue is, if you have 200,000 creatures such as ISIS, or Al-Nusra, or Islamic Jihad, or even further back with the Tamil Tigers who created the first individual suicide bombers, one can't say such a huge grouping of people for a "religious" cause are ALL suffering from mental illness.
And no one has said that, but each involves different issues as well. ISIS actively recruits and has sophisticated propoganda. The
Tamil Tigers were an ethnic conflict who's roots lay in Sri Lanka's colonial past.
But what The Tamil Tigers have in common with ISIS, Al-Nusra, Islamic Jihad is the using of the suicide bomber, which as I said effectively The Tamil Tigers created originally.
Are suicide bombers mentally ill or are they committed fanatics who consider it the highest honour to, in their opinion, Martyr themselves for the ultimate cause?
I don't know....the Japanese had the Kamakazi pilots. What you have is a person willing to kill himself for a "cause"...not necessarily mentally ill. But I have heard that some of these groups have exploited mentally retarded people to do it.
One important point...you ever notice the LEADERS of these groups (and their family members) never seem to be suicide bombers?
The suicide attack roughly is thought to date back to the 1st Century AD, but these were more suicide squads, rather than individual suicide bombers.
The first recorded individual suicide bomber, had no religious or political cause, it was a New Zealand farmer Joseph Sewell, he had a long running dispute with another farmer which went to court. Unknown at the time Sewell had strapped sticks of gelignite to himself, he blew himself up outside the courtroom, this was in 1905.
The Chinese had suicide squads, first used in 1911 during the Xinhai Revolution and then again during the Warlord Era from 1916-1928. These were often huge suicide squads, with suicide belts full of hand-grenades.
I think the largest single Chinese suicide squad were whats known as the 72 Martyrs of Huanghuagang, they all blew themselves up in 1911 in the uprising that began the Second Guangzhou Uprising.
The Tokubetsu Kōgekitai, which means "Special Attack Unit", more commonly known as the Kamikaze, which means "The Spirit Wind" or "The Divine Wind" (Kami means God, Divine, Spirit and Kaze means Wind) are completely unique, the aircraft were purposely built planes which essentially were explosive missiles, pilot-guided.
Death is a long-held tradition within Japanese military culture, rather than capture or defeat which has always carried a social shame on the military personnels entire family. This goes right back to the Samurai, it was the ultimate tradition of the Samurai, loyalty and honour until death, or what's known as the Bushido Code.
The Kamikaze as such cannot be put into the same category as Suicide Bombers, it's all very complicated, but I've attempted to explain it as easily as possible.
I should add that there were roughly 3,800 Kamikaze pilots, and ALL were volunteers, none were talked into it or exploited into it, they volunteered, they knew it was a "Special Attack Mission", they knew they would die, most were between the ages of 22 years-old and 28 years-old. They were pretty extraordinary young men.
They also had the Kaiten, which means "Return To Heaven", these were manned torpedoes, human torpedoes fired from submarines, containing one man, they fired about 100 of these human torpedoes between their introduction in 1944 and until 1945. They were very effective, sinking many Destroyer Ships and Destroyer Escorts.
Here's an obviously unused one, the Kaiten Type 1:
This is a diagram of the set-up inside the above, with the volunteer suicide attacker sitting in a central position:
The above were all Suicide Squads, with the exception of the Kaiten, the Kamikaze went out as a Suicide Squad, usually in a group of five planes with five pilots.
The Tamil Tigers differ because they perfected the individual suicide bomber, the lone suicide bomber with their Black Tigers Unit.
The very first individual suicide bomber, was a car bomber in the Lebanese Civil War, I'll have to look up the date of that, it was very early 1980s, it was the Iraqi Embassy in Beirut that was attacked.
Edited to add comment.