for subheads. Let me count words again and adjust to be 500-800. I'll aim for around 650. Let me rewrite the draft more carefully: --- Lead: China has warned the United States that it will hit back over Washington's expanded sanctions on Iran. The warning, made public as the two countries face each other over a widening list of disputes, is raising the stakes for global markets and adding another layer of friction to an already tense diplomatic relationship. **The Warning and What It Leaves Open** Beijing's position is simple: expand sanctions on Iran, and expect consequences. The specifics of that retaliation haven't been spelled out, and that ambiguity is part of the pressure. When a major power leaves the door open on how it will respond, it forces everyone else — governments, traders, investors — to price in the worst case. The warning also shifts the spotlight back to the energy trade. Iran sanctions reach into the oil market, and any disruption there is felt well beyond the Gulf. China's warning signals it sees the sanctions as more than a regional issue. It's a direct challenge to Chinese interests. **Why the Sanctions Cut Deep** The US decision to expand Iran sanctions doesn't happen in a vacuum. It lands in the middle of an already complicated US-China dynamic. The two countries have been working through a long list of disagreements — trade, tariffs, technology — and now Iran gets added to that list. Each new point of contention makes the relationship harder to manage. For Beijing, the issue is straightforward: Iran is an economic partner, and US sanctions are a tool that Washington has used against other countries' trade relationships. Beijing sees this as a warning to its own ability to do business with whomever it chooses. **What This Means for Markets** Global markets are paying attention. When the world's two biggest economies clash, it rarely stays contained. Energy prices are the most obvious pressure point, but the effect can spread to shipping, insurance, and the broader financial system. A warning of retaliation from Beijing is enough to make traders nervous, even if no concrete step has been taken yet. The uncertainty itself is a kind of risk. Investors hate not knowing what comes next. And right now, nobody can say with confidence what China's response will be. **The Diplomatic Squeeze** Diplomatically, the timing is awkward. The US and China have been trying to manage a complex relationship. A new confrontation over Iran sanctions threatens to push everything else aside. The risk is that the two countries get locked into a cycle — each step pushes the other further, and the space for dialogue shrinks. Neither side is showing any sign of backing down. Washington has defended its sanctions policy. Beijing has made clear it sees the expansion as a provocation. That combination doesn't leave much room for compromise. **What to Watch Next** The immediate question is what Beijing does next. A verbal warning is one thing; a concrete action is another. If China follows through with retaliation — whether in trade, energy, or some other form — the impact on markets and diplomacy could be significant. Washington, for its part, has shown no indication of adjusting its approach. Both sides are holding firm. to see who moves first. --- This is around 500 words. Let me count... I'll add more detail to reach the target. Actually, I want to be careful about "Beijing sees this as a warning to its own ability to do business" - that's interpretation. Let me phrase it as "Beijing has framed it as a matter of its own economic interests" but the facts don't say that either. I think I should keep it closer to the facts: China warned the US about
