EnergyGeopolitical risks spur Japan, other Asian buyers to diversify their suppliesAn oil tanker and refinery in Japan. The Japanese government has said it expects to source 100% of its oil through routes other than the Strait of Hormuz in July. (Source photos by Nikkei)YUTA KOGA, MISA HAMA and RIONA GOMIJune 27, 2026 02:58 JSTCAIRO/TOKYO -- Even with crude oil prices falling back to where they were before the U.S.-Iran conflict began, the war's impact continues to reverberate as Asian importers work to spread out their supply risk.