The Ministry of Defence wastes up to £94 million a year training 16 and 17-year-old army recruits for roles which could be filled by adults, campaign groups have said.
According to a report by Child Soldiers International and ForcesWatch, it costs as much to train a 16-year-old as an 18-year-old.
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The huge counter-terrorism effort is placing an unsustainable strain on wider policing service, one of the most senior officers has warned.
A man and woman have been arrested on suspicion of murder after a badly burned body was found in a garden in Southfields, south-west London.
Kim Jong-un has called Donald Trump "deranged" and says he will "pay dearly" for his threats, according to North Korea's state news agency.