The attack on Saudi Arabia reinforces a trend in warfare in which inexpensive easily acquired weapons come out on top.
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Consider the track record of the Improvised Explosive Device (IED), usually made out of easily available fertiliser, detonated by a command wire, and planted in or beside a road. These were used with devastating effect by the IRA in South Armagh, forcing the British Army off the roads and into helicopters.
IEDs were used in great numbers and with great effect against US-led coalition forces in Iraq and Afghanistan. Immense resources were deployed by the US military into finding a counter to this deadly device, which included spending no less than $40bn (£32bn) on 27,000 heavily armoured vehicles called MRAPs. A subsequent army study revealed that that the number of US servicemen killed and wounded in an attack on an MRAP was exactly the same as in the vehicles which they had replaced.
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It is unthinkable that American, British and Saudi military chiefs will accept that they command expensive, technically advanced forces that are obsolete in practice. This means they are stuck with arms that suck up resources but are, in practical terms, out of date. The Japanese, soon after they had demonstrated at Pearl Harbour the vulnerability of battleships, commissioned the world’s largest battleship, the Yamato, which fired its guns only once and was sunk in 1945 by US torpedo aircraft and bombers operating from aircraft carriers.
https://www.zerohedge.com/geopolitical/saudi-arabia-drone-attacks-have-changed-global-warfare