Foreign ministers of European Union countries will hold an emergency meeting next Friday in Brussels to discuss the Iranian crisis, diplomatic sources said Monday to AFP.
The European Union is trying to find ways to calm after the assassination of the Iranian General Qassem Soleimani, last Friday, with an American strike in Baghdad.
On Monday, European Union Foreign Minister Joseph Burrell said he "deeply regrets" Tehran's recent announcement on raising the level of uranium enrichment.
He added in a tweet, "The implementation of the nuclear agreement by everyone is more important today than ever, to regional stability and global security."
He indicated that he is "working with all concerned to (define) the direction in which to proceed."
He stressed that the European Union will rely on the activities of the International Atomic Energy Agency to assess the effects of the resolution.
"We have to see what the IAEA says about the facts on the ground," said his spokesman, Peter Stano, in his daily briefing.
Borel, on Sunday, extended an invitation to Iranian Foreign Minister Mohammad Javad Zarif to visit Brussels, and he again urged "a de-escalation" in the Middle East.
"There is a mutual understanding that the obligation (of the agreement) must continue, but the Iranians must tell us how they intend to act," Peter Stano said.
NATO ambassadors will meet on Monday afternoon to discuss the crisis between Iran and the United States.