Iran has threatened to halt all oil exports across the Persian Gulf, as the United States is set to unveil crippling new sanctions on Monday. The upcoming US curbs aim to sever Iran's economic lifelines, following months of protracted yet inconclusive warfare.

Tehran says Washington's plan to turn up economic pressure contradicts international law; oil traffic through Hormuz still near a standstill

The United States is set to announce stringent economic sanctions against Iran. These measures could significantly impact Iran and its key trading partners like China. Oil…