President Trump is warning that the US could restart strikes on Iran, a stance that reads less like a negotiating tactic and more like the opening move in a drawn‑out standoff. A few days ago, he described the fragile cease-fire as being on “massive life support.” In other words, a long, grinding stalemate appears to be taking shape. That’s a threat to the global economy because as the impasse drags on and energy exports from the Gulf remain blocked, the world’s oil supply shrinks and scarcity risks rise.