When looking at strategic options for military action in the Indian Ocean – and unimpeded access by sea and air to the bordering countries of the Indian Ocean, from South Africa past Somalia, Yemen, Iran, the Arabian Gulf, Indian sub-continent, Indonesia and Australasia – Diego Garcia is a strategic jewel, possession of which is crucial for security in the region and hence our national security. It allows coverage of the choke points south of the Cape of Good Hope, the Bab-el-Mandeb, Straits of Hormuz and Malacca Straits through which a huge quantity of global trade passes. It is no exaggeration to say that Diego Garcia – the largest of the Chagos Islands – hosts the most strategically important US air and logistics base in the Indian Ocean and is vital to the defence of the UK and our allies. Having visited Diego Garcia twice and utilised it in op-plans and routine deployments of carriers and SSNs, I was delighted to read this paper by Policy Exchange which calls on the Government to cease negotiations with Mauritius about cession of the Chagos Islands.