US President 
Donald Trump warned Sunday-Monday that fresh US-Iran talks are Tehran's "last chance." Per The Hill, Trump says Iran is facing a "last chance" before "decapitation." Per the Guardian, fresh US-Iran talks are the "last chance" for Tehran to avoid the war escalating, Trump says, and Iran is in talks with Oman over the shipping route but not the US, per Tehran. Per KBS World, Trump says ongoing talks with Iran are "last chance" for a deal to end the war.
What did Trump warn? Last chance before "decapitation" per The Hill; last chance to avoid war escalating per Guardian.
Who is Iran talking to? Oman on the shipping route per Guardian's Tehran-source framing — not the US.
What is the substantive-Oman channel? Substantive-Oman-mediation architecture typically operates as substantive-Iran-diplomatic-track backchannel.
How does this fit prior "deal perimeters" framing? Substantive-late-weekend "deal perimeters" architecture pairs with substantive "last chance" escalation-rhetoric injection.
What is the "decapitation" language? Trump's framing per The Hill. Substantive-strike-threat rhetoric.
What is the "shipping route" issue? Substantive-Strait-of-Hormuz shipping-lane architecture per the prior-cycle Trump-Hormuz-rapid-deal framing.
What's the substantive-Iranian-side messaging? Talks with Oman but not the US per Guardian's Tehran-source framing. Substantive-denial architecture continues.
How does this fit the substantive US-Iran-war-cycle architecture? Substantive-de-escalation-window transitions into substantive-escalation-rhetoric-injection while substantive-deal-perimeters architecture is contested.
What's next? Substantive-Monday-negotiation attempt track engagement, substantive-Iranian-side-clarification dynamics, substantive-Oman-mediation architecture, and substantive-Trump-response-track cycles will define the coming days.
Figures referenced: Donald Trump. — JudgeMarket.
