The clock is ticking on a race of President Donald Trump's own making: a sprint to negotiate dozens of trade deals before his 90-day pause on some tariffs expires — talks that negotiators of past trade deals say come with a range of strategic and logistical hurdles due to Trump's compressed timeline.

Long-threatened tariffs from U.S. President Donald Trump have plunged the country into a global trade war — all while on-again, off-again new levies further escalate uncertainty.