SPF China Observer: Differences in Maritime Traffic Protection Between the Navies of the United Kingdom and Japanese During World War II −Insights into Taiwan’s Resiliency− (Part 1 of 3)

Now entering its fifth year, the Ukraine War has become the largest armed conflict in Europe since World War II, developing into a high-intensity, prolonged war of attrition.

IINA: The Petrodollar Order Under Strain as the Iran War Disrupts Gulf Energy Revenues

The surprise attack on Iran by the United States and Israel on February 28, 2026, triggered a rapid escalation of Iranian military activity across the Persian Gulf. Retaliatory strikes damaged not only US military facilities but also oil and gas infrastructure, effectively shutting down the Strait of Hormuz.

By Masahide Takahashi, Affiliate Research Fellow, Middle East Institute of Japan

[OPRI Perspectives] The Importance of Maritime Transportation for Japan: Considering the Hormuz Strait Crisis and the Supply of Goods in a Potential Taiwan Contingency

The repercussions of the Hormuz Strait crisis, triggered by the armed attack by the United States and Israel on Iran, have been steadily expanding. In Japan, which depends on the Middle East for more than 90 percent of its crude oil, the disruption caused by the closure of the Strait has led to shortages in a wide range of products derived from crude oil. However, the lessons of this crisis extend beyond oil alone. When considering a potential future contingency involving Taiwan, the importance of securing maritime transportation routes for Japan—an island nation surrounded by seas—has been strongly reaffirmed. In light of this situation, it is necessary to comprehensively reassess sources and routes for procuring essential goods required for socio-economic activities and to strengthen resilience against potential crises.

By Yuki Kobayashi, Research Fellow, Sasakawa Peace Foundation