China has until midnight to drop its tariffs on the U-S before President Trump raises duties against the communist country by another 50-percent. South Florida financial anaylst Mark del Pezzo says if that happens expect your next iPhone to cost way more than a pretty penny. He says there's a method to Trump's negotiating madness and he believes cooler heads will prevail and tariffs will get lowered relatively soon. His advice is don't do anything rash, keep calm -carry on and be well diversified.