Maritime Strait Access: Beyond Open or Closed to Safe and Predictable Passage
Quick Look
- The article discusses how international straits may remain legally open but face military threats, attacks, higher costs, and arbitrary conditions, making safe, predictable, and affordable passage uncertain.
- It highlights the strategic importance of such waterways for China's trade and energy supplies, particularly the Strait of Malacca and Strait of Hormuz, and notes the United States' vested interest in global maritime security despite differing energy and trade patterns.
AI-generated summary
Why It Matters
The article examines the distinction between a strait being legally 'open' versus being practically accessible for safe, predictable, and reasonably priced passage, noting that military threats, attacks, insurance costs, sanctions, and arbitrary conditions can undermine usability despite legal openness.
A strategic international strait may remain legally “open” while ships face military threats, attacks, higher insurance premiums, sanctions-related risks, forced re-routing or arbitrary conditions for passage. In such circumstances, the question is no longer simply whether the waterway is “open” or “closed”, but whether ships can pass through it safely, predictably and at a reasonable cost. This distinction matters significantly to both China and the United States.
China is particularly dependent on maritime transport for its trade and energy supplies. The Strait of Malacca is a major gateway for China’s trade with the Middle East, Africa and Europe, while the Strait of Hormuz is critical to energy flows. That is why China keeps emphasising that, for the Strait of Hormuz, “ensuring unimpeded passage serves the common interest of the international community”.
The US is also deeply embedded in the global maritime system. Although its energy structure and trade patterns differ from China’s, disruptions to key international waterways impose economic costs too, while increasing the resources Washington must devote to protecting global maritime security.
Open Questions
- What specific military threats or attacks are currently affecting these straits?
- Which countries or entities are imposing arbitrary conditions or sanctions-related risks?
- What measures are China and the United States currently taking to address these maritime challenges?
