# Current state
The U.S.–Saudi 123 Agreement text (plus bilateral safeguards agreement) was signed on 2026-07-22, but as of 2026-08-06 it had **not yet been formally submitted to Congress** with the required Nuclear Proliferation Assessment Statement — meaning the mandatory 90-continuous-session-day statutory review clock has not started. Entry into force also faces a fresh political obstacle: hours after signing, Trump publicly conditioned the deal on Saudi Arabia joining the Abraham Accords, which Riyadh has said it will not do "for now."
# Timeline of key events
- 2025-11: "Joint Declaration on the Completion of Negotiations on Civil Nuclear Energy Cooperation" signed during MBS's White House visit (confirmed — energy.gov, congress.gov).
- 2026-03-26: Sen. Markey introduces S.4243, "No Nuclear Weapons for Saudi Arabia Act of 2026," referred to Senate Foreign Relations Committee (confirmed — congress.gov).
- 2026-07-22: U.S. (Energy Sec. Wright) and Saudi Arabia (Prince Abdulaziz bin Salman) sign the 123 Agreement and an accompanying bilateral safeguards agreement (confirmed — DOE, CNN, Al Jazeera, multiple outlets).
- 2026-07-23: Trump states on Truth Social that the deal hinges on Saudi Arabia normalizing relations with Israel; Saudi Arabia has previously rejected near-term Abraham Accords accession (reported — NPR, Axios).
- 2026-07-24: Reports that Trump was unhappy with the Energy Secretary over how the deal was handled (reported — news.am).
- 2026-08-06: Sen. Shaheen (SFRC Ranking Member) states the agreement has not yet been formally submitted to Congress or briefed in detail (confirmed — foreign.senate.gov).
- 2026-08-07: Arms Control Association confirms the deal does not require Saudi adoption of the IAEA Additional Protocol, despite bipartisan Senate calls for "gold standard" terms (confirmed — armscontrol.org).
# Event
Will the bilateral U.S.–Saudi Section 123 nuclear cooperation agreement legally enter into force between the two governments by Dec 31, 2026?
# Outcomes to forecast
Yes / No
# Kalshi market anchor
No direct kalshi_direct price was returned in this research pull. A market-data feed tagged "polymarket_direct" carrying this event's exact ticker shows **YES ≈ 23%**, up +2.5% (7d) and +6% (30d), on modest volume (~$30K total, 31 data points), with a historical range of 15.5%–77.5% (implying a much higher probability priced in earlier, before the Israel-linkage complication emerged). Treat 23% as the best available consensus anchor absent a distinct Kalshi print.
# Sub-question answers
1. **Text initialed/signed vs. MOU?** A binding 123 Agreement text plus safeguards agreement was signed 2026-07-22 — beyond MOU stage (DOE, CNN).
2. **Statutory steps/timing?** 90 continuous session days (30-day committee + 60-day full Congress) required after formal submission; code-execution analysis puts the latest submission date compatible with 2026 EIF at roughly May–July 2026 — already passed or barely met, and submission still hadn't occurred as of Aug 6.
3. **Enrichment dispute/Additional Protocol?** Unresolved: agreement reportedly allows a path to Saudi domestic enrichment via a joint feasibility study rather than an outright ban; Arms Control Association confirms the deal does NOT require the IAEA Additional Protocol, contrary to "gold standard" demands from Sens. Risch/Shaheen.
4. **Israel normalization linkage?** Reinstated, not dropped — Trump publicly tied the deal to Abraham Accords accession on 2026-07-23; Saudi Arabia has said it won't join "for now" (NPR, CFR calls this a "poison pill").
5. **Congressional appetite for disapproval?** Active: S.4243 (Markey) "No Nuclear Weapons for Saudi Arabia Act" pending in SFRC since March 2026; bipartisan concern from Risch and Shaheen over lack of gold-standard terms.
6. **Historical base rate?** 123 agreements historically take ~7–48 months from signature to EIF (median ~16 months); no precedent case achieved EIF in ~5 months (code_execution analysis).
7. **Polymarket/related markets?** This event's own market at 23% (declining from historical highs of 77.5%). Related Kalshi market "Israel-Saudi normalize during Trump's term" trades at 28% (down 10-12% recently) — reinforcing that normalization (a precondition per Trump) is itself uncertain.
# Key facts (high-confidence, factual)
1. [DOE, congress.gov] 123 Agreement + safeguards agreement signed 2026-07-22.
2. [foreign.senate.gov] Not yet formally submitted to Congress as of 2026-08-06.
3. [armscontrol.org] No IAEA Additional Protocol requirement in the deal.
4. [NPR/Axios] Trump linked entry into force to Saudi-Israel normalization (2026-07-23).
5. [congress.gov] S.4243 disapproval-oriented bill pending since 2026-03-26.
# Cross-market signals
- Kalshi related: "Israel–Saudi normalize during Trump's term" at 28% (falling); "US builds nuclear-powered military data center before 2030" at 46%.
- Polymarket (own ticker): 23% YES, down from a 77.5% historical high — sharp repricing after the Israel-linkage news broke.
- No dedicated sportsbook markets.
# Analyst opinions and speculation
- CFR: deal's near-term future "in doubt," Trump's Abraham Accords linkage a "poison pill" for Hill review.
- Arms Control Association's Kelsey Davenport: deal "sets a terrible precedent" by dropping enrichment/reprocessing restrictions — fuels disapproval-resolution risk.
- CFR flags midterm-election timing risk: review could bleed into a new Congress in 2027.
# Directional lean per outcome
- **Yes**: Signature already achieved (unusual progress); administration has incentive to push quickly; no submission yet reported blocked outright.
- **No**: Submission not yet made (as of Aug 6, ~5 months from year-end); calendar math makes 90-continuous-session-day completion by Dec 31 very tight to implausible; unresolved Israel-normalization precondition Saudi rejects; active disapproval bill; historical precedent shows no comparable case moving this fast from signature to EIF.
# Gaps / unknowns
- Exact/actual submission date to Congress (still pending as of latest data, 2026-08-07).
- Whether Trump's Israel-linkage is a hard precondition or negotiating rhetoric.
- Congressional session calendar specifics (recesses) affecting the 90-day count.
- No confirmed Kalshi-direct price snapshot in this research batch.
# Calibration anchors
- Polymarket/ticker-matched price: 23% YES (trending up but far below historical 77.5% high).
- Code-execution model estimate: ~10–20% unconditional probability of 2026 EIF given "signed but not yet submitted" status.
- Historical 123-agreement base rate: median 16 months signature-to-force; no precedent under ~7 months.