The Strait of Hormuz crisis has created a perfect storm for global insurance and reinsurance markets, as the combination of sixteen tanker attacks, explicit Iranian threats to destroy allied-bound vessels, and the prospect of mines in the world’s most important oil shipping lane drives risk premiums to extraordinary levels and forces a wholesale reassessment of maritime risk in the Persian Gulf region. The absence of any committed naval protection — despite President Trump’s calls for allied warships — has left shipping companies and their insurers to price the full cost of Iranian threats into their coverage calculations with no military deterrent to offset the risk.
Iran’s blockade of the strait began in late February as retaliation for US-Israeli airstrikes, generating the most severe oil supply disruption in history. Tehran has attacked sixteen tankers, declared vessels heading for American or allied ports to be legitimate military targets, and raised the prospect of mining the waterway. For insurers who must price the probability of total loss of a vessel and its cargo against an explicit and credibly demonstrated threat of military attack, the actuarial mathematics of covering transits through the strait has become essentially prohibitive, adding enormous financial costs to the physical risk facing commercial operators.
Trump called on the UK, France, China, Japan, South Korea, and all oil-importing nations to send warships to defend the passage. None committed forces. France ruled out sending ships while fighting continued. The UK explored lower-risk options. Japan cited a very high threshold. South Korea pledged careful deliberation. Germany questioned the EU mission’s effectiveness. For insurance markets, the absence of naval protection means that the military risk of transit cannot be offset by the deterrence effect that a committed naval presence would provide — leaving insurers as the ultimate financial backstop for a geopolitical risk that governments have declined to address militarily.
The impact on reinsurance markets is also significant. Insurance companies covering maritime risks in the Persian Gulf region pass their exposure up to reinsurers in markets like London and New York, spreading the financial risk of the crisis through the global financial system. The sustained elevation of risk in the strait — combined with the absence of any clear timeline for resolution — is creating pressure on reinsurance pricing and capacity that will eventually feed back into the premiums paid by commercial operators and ultimately into the prices paid by energy consumers worldwide.
China’s diplomatic engagement with Tehran offers the most plausible near-term path to any reduction in the insurance risk environment. If Beijing can facilitate an arrangement that allows even some tankers to pass safely, it would begin to reduce the actuarial risk of strait transit and potentially ease the insurance premium spiral. The Chinese embassy confirmed China’s commitment to constructive regional engagement. US Energy Secretary Chris Wright expressed hope that China would prove a constructive partner, acknowledging the urgency of finding a path to resolution for markets — including insurance markets — that are absorbing the full cost of the current dangerous standoff.