Tehran's warning to Riyadh came through a phone call between the two countries' foreign ministers. Iran's foreign minister stated that any aggression by the United States or Israel will draw a decisive response, and that regional states participating in such actions face the same terms. The minister published his account of the call on Telegram.
Scope of the warning
The stated threshold covers two distinct tracks. Direct military action by the United States or Israel against Iran falls within it. So does the participation of regional countries in any such action. The formulation places neighboring states explicitly within the conditions Iran has named, extending the warning beyond the two powers cited.
The channel Iran used
Iran chose Saudi Arabia as the addressee for this message, reaching the Saudi foreign minister directly in a bilateral call. Iran's foreign minister then moved the content to Telegram, creating a public record of his stated position. Saudi Arabia's account of the conversation does not appear in the source material, which rests entirely on the Iranian minister's Telegram post.
What the source establishes
The minister described the potential response as decisive. No detail follows in the source on what form that response would take. No timeline or military specifics appear in the published account, and no secondary confirmation from another party is available.