NEW: Qatar-led mediators push Iran to accept nuclear concessions to avoid massive US-Israel strikes after US midterm elections.
The proposal would allow UN inspectors to enter Iran's bombed nuclear sites in exchange for limited sanctions relief and access to frozen funds.
Without a deal, US and Israeli officials expect a week-long bombing campaign targeting Iran's leadership, energy facilities, nuclear sites and infrastructure.
Iran is expected to seek Supreme Leader Mujtaba Khamenei's approval for the proposals in the coming days.
Source: Axios