"Indirect talks offer a chance to evaluate Washington's seriousness about a political solution with Iran," said an official.
France's foreign minister warned that a military confrontation with Iran is likely if a nuclear deal is not reached soon.
Macron held a meeting on Iran’s nuclear program amid rising US tensions. Europe is pushing for a new deal with Iran by August.
Iran is saying it has a right to develop all the components to build a bomb, and if the US tries to stop it, then Iran will build a bomb.
Khamenei referred to Trump's remarks that "If they don't make a deal, there will be bombing...the likes of which they have never seen before."
The report comes amid contact between the Islamic Republic and the US over reported efforts to reach a nuclear deal.
Trump pushes for a new nuclear deal with Iran to avoid military action, but Khamenei rejects talks, calling it a deception as US sanctions pressure Tehran.
The 'Post' learned that the earthquake was not caused by a nuclear test, seeing as the shocks were too close to a deep fault.
"Several bilateral issues will come up in the discussions," the Israeli official said.
Iran's Supreme Leader Ayatollah Ali Khamenei rejected Trump's letter last week as deceptive, saying Trump's excessive demands would 'tighten the knot of sanctions and increase pressure on Iran.'