The deputy head of Iran’s Airlines Association reported that the number of inactive planes in Iran has risen to more than 170 "as a result of spare parts, particularly motors."
Western officials have said Iran has abandoned many compromises it had made in the previous six rounds of talks, pocketed those made by others, and demanded more.
Iran will await "practical steps by the West," negotiator Ali Bakri Kani is quoted saying by Iran's semi-official ISNA.
The visit by Sheikh Tahnoon bin Zayed Al Nahyan comes amid efforts in Vienna to save Tehran's tattered nuclear deal with world powers.
Iran's Foreign Ministry Spokesman Saeed Khatibzadeh told reporters at a news conference in Tehran that his country won't allow its "time or energy to be wasted" by other parties involved in talks.
Mossad chief David Barnea headed to Washington late Saturday on a previously unannounced trip and Defense Minister Benny Gantz leaves Wednesday for meetings with his US counterpart Lloyd Austin and Secretary of State Antony Blinken.
With delegation of senior Emirati officials slated to depart for Tehran, senior Israeli diplomatic official tells Israel Hayom that when regional players sense weakness, they "reach conclusions."
Tehran dismissed reports of a large explosion near the sensitive uranium enrichment site as unannounced military maneuvers. The incident comes as nuclear talks in Vienna break down, US secretary of state warns that Washington will "pursue other options" if diplomacy fails.
As indirect talks in Vienna between Washington and Iran continue, both sides express pessimism.
Tehran is not slowing down its atomic program, further raising the stakes in talks crucial to cooling years of tensions boiling in the wider Mideast.
