China Warns the US Over Iran Sanctions China has warned Washington that it is prepared to take “all necessary measures” to defend its interests if the US significantly expands sanctions targeting Chinese companies doing business with Iran. The warning comes after the US threatened secondary sanctions against countries that continue trading with Tehran. China is at the center of the pressure, accounting for roughly 90% of Iran’s oil exports. 🔥 Another potential escalation between the world’s two biggest powers — and markets will be watching closely. How do you think $BTC will react on this?