Earlier on Friday Washington announced that the summit would be held in Warsaw from Feb. 13 to Feb. 14, and US Secretary of State Mike Pompeo said the meeting would focus on stability and security in the Middle East, including on the "important element of making sure that Iran is not a destabilising influence."
Writing on his Twitter account, Zarif said:
"Reminder to host/participants of anti-Iran conference: those who attended last US anti-Iran show are either dead, disgraced, or marginalised. And Iran is stronger than ever."
He went on to write that "while Iran saved Poles in WWII, it now hosts desperate anti-Iran circus."
Relations between Tehran and Washington are once more highly fraught following the decision in May by President Donald Trump to pull the US out of a 2015 nuclear deal between Iran and six major powers and to reimpose sanctions.