Israeli Prime Minister Benjamin Netanyahu and Iranian Foreign Minister Mohammad Zarif exchanged sharp words on Sunday at an international security conference in Munich, Germany, a week after the two countries engaged in a direct military confrontation in Syria. Netanyahu held up a piece of metal that he claimed came from an Iranian drone which Israel shot down after it allegedly penetrated Israeli airspace.

Prime Minister Benjamin Netanyahu: “Mr. Zarif, do you recognize this? You should. It’s yours. You can take back with you a message to the tyrants of Tehran: Do not test Israel’s resolve.”

In response, Iranian Foreign Minister Mohammad Zarif called Netanyahu’s display “cartoonish” and accused Israel of escalating the threat of direct military confrontation.

Mohammad Zarif: “Israel uses aggression as a policy against its neighbors, mass reprisals against its neighbor, daily incursions into Syria, Lebanon and other Arab countries, daily bombardments, almost routine bombardments of Syria. And once somebody as the Syrians have the guts to down one of its planes, it’s as if a disaster has happened.”