The meeting, if it goes through, could be a make-or-break moment in the conflict and decide if the US will join the offensive in a bid to eliminate Iran's nuclear program.

Experts suggest the U.S. has a strategic opportunity to leverage Iran's weakened position for a nuclear deal after Israel's targeted strikes on Iranian nuclear and military sites.

European foreign ministers told their Iranian counterpart in a call on Monday to return to nuclear negotiations with the U.S. and refrain from escalating conflict with Israel, to which Iran's foreign minister said Tehran's priority was to confront Israel for now,

"I am pleased to confirm the 6th round of Iran US talks will be held in Muscat this Sunday the 15th," Bad Albusaidi, the country's foreign minister said on social media.

Tehran’s message to neighbours is that it will not negotiate over nuclear programme while under attack, diplomats say

Iran and the United States on June 9 indicated that talks on Iran’s nuclear program will continue but the two side gave different dates for the next round of Iran-US indirect negotiations.

Following Israeli strikes that killed seven officials, including nuclear scientists, Iran vows to continue uranium enrichment despite U.N. nuclear watchdog's formal rebuke.

Iran has warned it will ramp up its nuclear activities after the United Nations nuclear watchdog’s 35-member board of governors adopted a resolution Thursday declaring it in breach of its non-proliferation obligations.