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The RAF has withdrawn the ALARM missile from the Tornado and has no plans to integrate it on the Typhoon or F35. Many critics see this as the RAF getting out of the Suppression of Enemy Air Defence business altogether. The F35B could certainly not carry the ALARM missile internally but given its size I don’t think any version could.
Destruction of power stations and oil installations affect the local civil population adversely. US domestic opinion needed moulding and larger air assets could be deployed only after early 2015. With Kurd and Iraqi troops involved on the ground, air strikes require proper coordination to avoid collateral damage. Airborne Early Warning and Control System aircraft is being extensively used. Initial strikes in Syria had to be led by stealthy F-22 Raptor air superiority fighters and preceded by EA-6B Prowlers in the Suppression of Enemy Air Defences.