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US, Israel war on Iran
This Week in AsiaEconomics

Why US interception of Iran tankers in Asian waters pose new risk to Asean neutrality

The bigger risk is not of the Iran war spilling into their waters, but the strain of operating in more contested sea lanes, analysts say

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Guided-missile destroyer USS Michael Murphy patrols the Arabian Sea during a maritime blockade on April 15. Photo: US Navy/AFP
Ushar Daniele
US interceptions of Iranian-linked tankers in Asian waters suggest Washington’s maritime pressure campaign may be spreading eastward, raising new risks for Southeast Asian states overseeing crucial sea lanes.
Analysts said that although Southeast Asian nations were not parties to the war, countries such as Malaysia, Indonesia and Singapore were not insulated from rising US-Iran maritime tensions.

For these states, the bigger risk may not be a Gulf conflict spilling directly into their waters, but the strain of operating in more contested sea lanes, where they could face greater surveillance, pressure to police sanctioned shipping and a higher risk of confrontation along routes vital to trade.

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The US has sought to tighten pressure on Iran by blocking access to Iranian ports, a campaign Washington says is aimed at disrupting Tehran’s ability to move sanctioned oil and other cargo through the Strait of Hormuz, one of the world’s most important energy chokepoints.
US Marines rappel onto Iranian-flagged vessel MV Touska in the Arabian sea on Sunday. Photo: US Central Command Public Affairs/AFP
US Marines rappel onto Iranian-flagged vessel MV Touska in the Arabian sea on Sunday. Photo: US Central Command Public Affairs/AFP
On Wednesday, the US military reportedly intercepted at least three Iranian-flagged tankers in Asian waters, redirecting vessels from the seas off India, Sri Lanka and Malaysia.
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