The announcement of a significant increase in the defence budget marks a new era in how the UK military will operate – but also brings into sharp focus a much-needed examination of exactly how the military should operate under international law.
Operations in the ‘sub-threshold battlefield’ – often referred to as the ‘grey zone’, where states and non-state actors compete in a hostile manner using a variety of tactics but below the threshold of war – have always been complicated by the lack of agreed protocols by those involved. The reality is, however, that the grey zone is far from a ‘rules-free’ battlefield.
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