Iran announced restrictions on maritime traffic through the Strait of Hormuz, which is located along its southern coast. Around 20 percent of the world’s oil and gas supply passes through this route. Even a pause in movement creates anxiety in trading floors from London to Singapore. Iran announced restrictions on maritime traffic through the Strait of Hormuz, which is located along its southern coast. Around 20 percent of the world’s oil and gas supply passes through this route. Even a pause in movement creates anxiety in trading floors from London to Singapore.