The Indian Ocean may present the greatest logistical challenges for China. This is because of the presence of “choke points”, passages that are constricted and therefore could be blocked by other powers. These are not just the Malacca, Sunda and Lombok Straits that offer entry from the South China Sea into the Indian Ocean. They include the Straits of Hormuz where some of China’s energy supplies originate. The Bab el-Mandab is another choke point. There’s also the Suez Canal and then the Mozambique Channel on the African east coast. The Pacific Ocean has no such choke points.