Conflicting signals from the United States and Iran over the status of talks to end their five-month-old war boosted uncertainty on Tuesday, with the latest attack on shipping in the Strait of Hormuz highlighting risks to global energy flows.

DUBAI/WASHINGTON — Conflicting signals from the United States and Iran over the status of talks to end their five-month-old war boosted uncertainty...

DUBAI/WASHINGTON, Aug 4 (Reuters) - Conflicting signals from the United States and Iran over the status of talks to end theirfive-month-old warboosted uncertainty on Tuesday, with…