By Parisa Hafezi, Timour Azhari and Ahmed TolbaDUBAI/CAIRO, July 29 (Reuters) - Tehran has ruled out Oman's proposal for regional joint management of the Strait of Hormuz, a senior Iranian official told Reuters on Wednesday, scuppering hopes for a resolution to the impasse that has choked off Gulf trade for months.Oman proposed a new regional deal aimed at resolving the conflict over the critical strait, through which about a fifth of global oil and liquefied natural gas flowed before the U.S. and Israel attacked Iran in February.

The latest talks come after the United States resumed attacks on Iran in an effort to end Tehran's control of the strait

TEHRAN, July 26 — Iran said on Sunday it had made progress in talks with Oman on management of the Strait of Hormuz, the strategic waterway crucial for oil and gas trade that...