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.

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.

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.