Economic and Geopolitical Risk Scenarios for the Next 3 Months

This is a snapshot taken on 21 June 2026, looking out to roughly the end of September. A risk note has a short shelf life: the inputs below will be stale within weeks, and the point is to name the live mechanisms and the triggers worth watching, not to predict an outcome. Confidence decays with horizon, so the scenarios are ordered by how cleanly they resolve inside a three-month window. The slower-burning tails sit at the end, where the honest answer is lower probability and wider error bars. On why a base rate beats a vivid story when you size any of these, see Reference Class Forecasting.

The rough ordering below is a judgment, not a model. The odds are coarse and meant to be argued with, not trusted to the decimal.

The Iran ceasefire is the live wire

The largest near-term binary is whether the just-signed truce holds. On 17 June, Trump and Iranian President Masoud Pezeshkian signed a 14-point memorandum of understanding ending more than 100 days of war that began with the 28 February US-Israel strikes (Operation Epic Fury). The deal reopens the Strait of Hormuz without tolls, lifts the US naval blockade of Iranian ports, and opens a 60-day window to negotiate Iran’s nuclear program and sanctions relief. Pakistan, the mediator, said on 18 June that Tehran would reopen Hormuz promptly.

The energy round-trip shows the stakes. Brent jumped 10 to 13% to the low $80s right after the 4 March strait closure, then climbed toward ~$120 by late April as the blockade dragged. On the deal, oil fell sharply, back to its lowest since 10 March. Roughly a fifth of world oil trade moves through Hormuz, so the price is effectively a live referendum on the MoU.

The risk is collapse inside the 60-day negotiation window, which means the question resolves by mid-August, well within this horizon. PBS flagged that challenges remain on nuclear verification and sanctions sequencing. Ceasefires that pause an active interstate war, rather than a frozen one, are historically fragile, and a re-closure would re-run the oil spike from a market that has already priced relief. Watch: IAEA inspection access, the order of sanctions relief, tanker war-risk insurance premia, and Brent itself.

AI capex is the market’s main idiosyncratic-turned-systematic risk

The dominant equity risk is not a recession call. Forecasters put 2026 US recession odds at 35% (J.P. Morgan), 30% (RSM), and near 15% on the New York Fed yield-curve model, with the Sahm indicator at 0.10 against a 0.50 threshold. The sharper exposure is concentration in one spending cycle.

Hyperscaler capex is set to clear $600 billion in 2026, around 23% of revenue and more than double pre-ChatGPT intensity, with debt increasingly bridging the gap to internal cash flow. The structure is reflexive circular financing: Nvidia takes a stake in OpenAI, OpenAI commits to Oracle data centers, Oracle buys Nvidia, and demand signals circulate inside the cluster rather than being validated outside it. Man Group, which is positioned to benefit from a bearish read, frames the absence of a measurable GDP lift after hundreds of billions in spend as a late-cycle tell. The bull rebuttal is that this is the normal lead-lag of any infrastructure buildout, where railways and electrification also ran years of capex ahead of measured productivity, so the gap is timing, not a bubble. The risk to the market does not require the bears to be right about end-demand. It requires only that the loop is reflexive: one firm trimming capex pulls revenue down across the whole cluster regardless of whether the long-run thesis holds.

This is where the idiosyncratic-to-systematic transition bites. A handful of AI names now drive the S&P 500, so a cluster-specific repricing is a market-wide event, not a diversifiable one. If markets are as flow-driven as the Inelastic Markets Hypothesis estimates, the move down can be larger than fundamentals warrant once passive flows reverse. The near-term trigger is concrete: Q2 hyperscaler earnings land in late July, and a single capex guide-down or a credit market that balks at the next debt tranche is the catalyst to watch.

Tariffs after the Supreme Court: in flux, not resolved

On 20 February 2026 the Supreme Court struck down the IEEPA tariffs 6-3, holding that the power to tax imports belongs to Congress. That voided the February 2025 fentanyl tariffs and the April 2025 reciprocal tariffs, opened up to $175 billion in potential refunds, and roughly halved forward tariff revenue.

The administration pivoted to Section 122 of the Trade Act of 1974, which allows a temporary import surcharge capped at 15% for up to 150 days. Two features make this a live three-month risk rather than a closed chapter. The 150-day clock forces a scramble toward more durable authority (Sections 301 and 232, which require investigations), so the policy mix can shift again inside the window. And the refund mechanics and re-imposed surcharges keep cost and supply-chain uncertainty elevated for importers, the same channel that has driven trade-policy volatility since 2025.

The long end of the Treasury curve can ignore the Fed

The Fed held at 3.50 to 3.75% in April and is expected to cut roughly another 50 bp in 2026. The scenario worth holding is that short-rate cuts do not pull long yields down. The FY2026 federal deficit is around $1.9 trillion, issuance is heavy, and Goldman ties upward pressure on long yields to fiscal supply, a rising Term Premium, global yields, and oil. Schwab’s range for the 10-year is about 3.75 to 4.50%.

The tail here is a poorly received long-dated auction or a broader buyers’ strike that lifts the long end while the Fed is easing, a steepening that tightens financial conditions through the back door and raises the discount rate on the same equity cluster above. Long-duration bonds carry the most price sensitivity to that move; see Bond Duration. This risk runs on its own clock, only loosely tied to growth, which is what makes it easy to underweight.

Inflation re-acceleration boxes in the Fed

PCE inflation is expected near 2.7% in 2026 with unemployment drifting toward 4.5%. The risk is that an oil shock from a failed Iran truce, plus any Section 122 surcharge pass-through, reignites goods inflation while the labor market cools, a stagflation-lite mix that limits how much the Fed can help if growth slips. The variable that decides whether a supply shock stays a one-off or embeds is whether expectations stay anchored; the market read on that lives in breakeven rates. A spike in five-year breakevens alongside oil would be the early signal that the 2022 dynamic is restarting.

Lower-probability, higher-impact tails

Slower-burn risks dominate the impact tables but are unlikely to resolve inside three months. China-Taiwan is the largest: the PLA has run task-group and live-fire drills including the Liaoning near Luzon, and a modeled conflict would cost the global economy around $10.6 trillion, roughly 9.6% of GDP in year one. China’s own backdrop is fragile: a property downturn and weak consumption have pushed CPI to about 0%, a deflationary drag that a renewed oil shock would only partly offset. The point of keeping these on the list is not a near-term call but to note that they are the dominant systematic shocks if the window surprises to the downside.

How the top scenarios connect matters as much as each alone. A failed Iran truce lifts oil, which lifts inflation, which limits Fed easing and pressures the long end, which raises the discount rate on the AI-concentrated equity market. That is one shock propagating through five channels, and it is exactly the regime where diversification thins out and only a deliberate hedge pays, because the correlations that look comfortable in calm markets converge in a stress event.

Try it

Build a one-screen risk dashboard (an afternoon, Python + FRED/yfinance). Pull and plot, on a shared recent window: Brent (BZ=F), the 10-year yield (^TNX) and the NY Fed ACM term premium series, 5-year breakeven inflation (FRED T5YIE), the VIX (^VIX) and the MOVE index for bond vol, and a concentration proxy like the equal-weight-vs-cap-weight S&P ratio (RSP/SPY). What you are looking for is co-movement: if a single headline moves oil, breakevens, the term premium, and the cap-weight ratio together, you are watching the cross-channel transmission in this note in real time. A day where they diverge tells you the market is treating the shock as contained.

Back-test the ceasefire base rate (1-2 hours, no code). Pull a list of interstate-war ceasefires from the last few decades, code each as “held 90 days” or “broke,” and compute the raw fraction that held. Set that base rate beside the current implied odds on a prediction market for a durable Iran-US deal. The gap between the reference-class rate and the market price is the cleanest read on whether the truce is being priced with discipline or with hope.

See also

• Reference Class Forecasting — the outside-view discipline for sizing any one of these scenarios.
• Systems Thinking — why one shock propagating through five channels is a feedback structure, not five separate events.

Sources

• Global Risks Report 2026 — WEF; geoeconomic confrontation and state-based conflict top the near-term rankings.
• 2026 Iran war ceasefire and 2026 Strait of Hormuz crisis — the MoU terms, the 60-day window, and the oil round-trip.
• What the Supreme Court’s tariff ruling changes, and what it doesn’t — PIIE on the IEEPA decision and the Section 122 pivot.
• The AI Bubble: Hidden Risks and Opportunities — Man Group on circular financing and the capex-vs-GDP gap.
• How US Fiscal Concerns Are Affecting Bonds, Currencies, and Stocks — Goldman on the term-premium and long-end channel.
• Probability of a Recession — J.P. Morgan’s 35% base case, useful as the consensus anchor.

Updates

A running log. The 21 June snapshot above is frozen as the original call; each entry below scores how it has aged, so the note tracks itself against the reference class it preaches.

5 July 2026

Two weeks on, three of the six live wires moved and one barely twitched.

Iran / Hormuz — truce holding, oil round-trip essentially complete. Brent sits near $72, down roughly a quarter over the past month and back to pre-war (late-February) levels, having fully unwound the run to ~$120 in late April. US-Iran negotiators met in Doha on 1 July with Vance calling the talks “going well.” So relief is priced. But the reopening is contested, not clean: Hormuz traffic is recovering yet still below pre-war volumes, thousands of seafarers remain trapped in the Gulf, and Iran is pushing to run a new administration of the strait that may include transit charges. The binary still resolves inside the 60-day window, by ~mid-August; the market has just moved to pricing the good outcome, which is exactly what makes a break more violent from here.

Fed — the biggest reframe. The original rate section assumed easing, “roughly another 50 bp of cuts in 2026.” That premise is gone. The June dot plot flipped to a projected quarter-point hike in 2026, and futures now price the funds rate rising toward ~3.8% by October and near 4% by year-end, with the FOMC expected to hold on 28-29 July. The 10-year is ~4.46-4.49%, the top of Schwab’s range. This collapses two scenarios into one: “long end sells off while the Fed eases” loses its premise (the Fed isn’t easing), and “inflation boxes in the Fed” has stopped being conditional and partly arrived. The risk is no longer a divergence between the short and long ends, it is both repricing higher together.

Section 122 — more acute, not more settled. In May the Court of International Trade struck the surcharge down as exceeding presidential authority, but limited relief to the three importer plaintiffs before it, so everyone else still pays the 10%; the government has appealed to the Federal Circuit. Independently, the 150-day clock runs out on 24 July, inside this window. The administration is racing Section 301 investigations to conclude this summer before expiry. The “scramble toward more durable authority” the note flagged is no longer a forecast; it is happening now, with a legal-invalidation layer on top.

AI capex — unchanged in shape, larger in size. No hyperscaler has trimmed guidance; the opposite. 2026 estimates have been revised up to ~$725-750 billion from the ~$600B in the original, with Meta lifting full-year guidance to $125-145B and Microsoft, Amazon, and Alphabet all raising. The concentration risk is therefore bigger, and the catalyst is unchanged: Q2 earnings land late July, and the number to watch is any capex guide-down of more than ~10% versus the prior framing. China-Taiwan is the twitch that didn’t move: Taiwan is running planned blockade-escort drills in July, but there is still no clean near-term trigger.

Revised scoring against the original table: