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• Tanker reports fresh explosions in strait; US naval blockade remains in place

• US imports of Middle East crude set to cross 0.6m barrels per day

• Vance, Ghalibaf trade barbs over ‘messy negotiations’

WASHINGTON / TEH­RAN: Despite an understanding between Iran and Oman, fresh security incidents in the Strait of Hormuz on Thursday highlighted the continued risks for regional shipping in the critical waterway.