What if Hungary and Slovakia veto EU treaty change?
Hungary and Slovakia blocking fiscal-union reform stalls EU integration — a slow institutional drag that widens periphery spreads marginally and weighs on the euro, far below the +5.4% VIX / -2.2% Nasdaq shown. Rhymes with recurrent Hungarian veto standoffs over EU budgets/funds that delayed but did not derail integration. Transmission: EU cohesion premium in periphery spreads and the euro; minimal US transmission. Forward angle: veto brinkmanship usually ends in a side-payment compromise, so this is a headline/process risk, not a market-structural break — fade the vol.
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The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (electric blue) over time vs the market's (Polymarket, amber), from the past toward the 1–3 years horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. Loading the probability audit trail…
What it would mean
If this plays out, it is a risk-off shock. Hungary and Slovakia block fiscal-union reform, stalling the next phase of European integration. The trigger decomposes into signed root‑shocks — Credit spreads ▲ · Geopolitical risk ▲ · Risk appetite ▼ — which propagate through our causal graph to the markets below.