By Lewis Krauskopf, Saqib Iqbal Ahmed and Laura Matthews NEW YORK (Reuters) -Three months after President Donald Trump's sweeping global tariffs led markets to plunge and then rebound ferociously, investors are grappling with the fallout from the still-shifting trade backdrop and adjusting strategies to withstand sudden policy shifts.

President Donald Trump unveiled his most sweeping volley of tariffs yet — holding up large charts from the White House Rose Garden to outline new import taxes that the U.S. would soon slap on goods from nearly every country in the world.

The clock is about to run out on President Donald Trump's 90-day pause on the sky-high "Liberation Day" tariffs announced in April, and the administration has sent a flurry of messages about what exactly will happen Wednesday when the deadline expires.