Will they find anything Iran's trying to hide?  The UN nuclear inspection team, headed by Herman Nackaerts, is back in Tehran today.

FOX News Radio's Emily Wither reports:

It's thought those inspectors in Tehran will be meeting Iranian nuclear scientists and visiting a key military facility there.

It's the second trip in less than a month, the head of the five member-team is remaining upbeat.

(Herman Nackaerts) "We hope to have some concrete results after this trip."

But the pressure for results will be high over fears that Israel is planning a military strike on Iran.

Obama's top security guy here in Israel yesterday meeting with Prime Minister Benjamin Netanyahu.

In Jerusalem, Emily Wither, FOX News Radio