
The world’s already on edge — between wars, inflation, and political upheaval, 2025 has been anything but calm — including a slim (5%) chance the U.S. declares war on Iran, according to Polymarket traders.
But what’s the one risk that could still detonate before year’s end?
Experts are watching one pressure point more than any other. This isn’t guesswork — it’s about what the data, markets, and governments are quietly bracing for. Let’s breakdown the biggest global risk still ahead.
The Risk to Watch — A Wider Middle East War

The top global threat for the rest of 2025 is a regional war that spirals across the Middle East. In June, Israeli strikes on Iranian nuclear facilities triggered direct Iranian missile retaliation. The U.S. deployed reinforcements. The ceasefire is fragile. If this reignites, it could suck in Lebanon, Syria, the Gulf, and global oil markets in one blow.
Iran’s Regime Is Under Pressure

Inside Iran, things are cracking. Economic collapse, regime protests, and factional splits have the clerics cornered. The fear? Tehran lashes out to distract from domestic free-fall — or collapses outright, triggering chaos in the world’s most volatile region.
The Houthi Threat to Global Shipping

Houthi forces resumed attacks on Red Sea shipping in July, targeting commercial vessels with drones and missiles. Global insurers hiked premiums again. Rerouted ships mean slower supply chains and price shocks that ripple from Suez to San Francisco.
Oil Markets on a Knife’s Edge

20% of the world’s oil flows through the Strait of Hormuz. Block it — or even threaten to — and oil hits $130+ overnight. That would spike inflation, kneecap fragile recoveries, and push central banks back into emergency mode.
U.S. Military Presence is Growing

Thousands of U.S. troops now guard Gulf assets, Red Sea lanes, and Israeli interests. Deterrence is the goal, but proximity increases risk. One wrong move — one strike too far — and Washington’s in a regional war it never planned for.
Israel’s Calculus is Changing

Israel’s government is under siege politically and militarily. Facing fire from the north and south, it may double down on preemptive strikes. A decision to hit Iran’s nuclear program again — or dismantle Hezbollah’s rocket stockpiles — would trigger immediate escalation.
China and Russia Are Watching

Conflict in the Middle East creates openings. Russia gets breathing room in Ukraine. China may test the waters in Taiwan or the South China Sea. A distracted U.S. means bolder moves from the “Axis of Upheaval.”
Financial Markets Are Already Nervous

Defense stocks are surging. Oil volatility is up. Gold is near record highs. Smart money sees the risk already — markets are flashing red while the headlines still hedge.
AI and Disinformation Will Fan the Flames

A broader conflict won’t just be fought with missiles. AI-generated deepfakes, propaganda bots, and cyberattacks will flood the information space. Expect mass confusion and destabilization — before the first shot is even confirmed.
The Wildcard — Regime Collapse in Iran

If Iran’s regime collapses outright? That’s the true black swan. Power vacuums, militias, nuclear sites unguarded, foreign actors rushing in. The fallout could make the Iraq War look orderly.
Key Takeaways

- A wider Middle East war remains the top global risk in late 2025.
- June’s Iran-Israel clash nearly triggered it — next time, the gloves may come off.
- Climate catastrophes and AI disruption are real risks too, but less immediate.
- Markets are hedging, militaries are moving, and the fuse is still lit.
- Watch the oil price, U.S. troop movements, and Hezbollah’s next move.