TEHRAN, April 8 -- US Vice President JD Vance warned the truce between Washington and Tehran remained "fragile" Wednesday as several Gulf nations endured fresh attacks just hours after the rivals agreed a two-week ceasefire.

The strikes on Kuwait and the United Arab Emirates came as two ships passed through the Strait of Hormuz after Iran agreed to temporarily reopen the strategic waterway under threat of annihilation by President Donald Trump.

Both sides claimed victory as the eleventh-hour ceasefire was announced but Iran warned the war was not over until formal terms were negotiated, with talks between Tehran and Washington expected in Pakistan on Friday.

Tehran's demands over future control of Hormuz - a narrow strait through which...