SIR – The West’s cowardice in refusing to confront Iran is shameful (Letters, April 20). Mealy-mouthed words from Joe Biden and Lord Cameron, the Foreign Secretary, will encourage not only Iran but also all of its proxies, who wage war on its behalf. Unless we confront Iran now and destroy its nuclear development sites, we will be staring down the barrel of another major world war. Major Mike Mckone (retd) Kirby Stephen, Cumbria