One of the most pivotal weeks in years - even decades - for the global economy closed on Friday to the sound of the Nasdaq crashing into a bear market as investors fear U.S. President Donald Trump's trade war will tip the world into recession. Less than 48 hours after Trump raised tariff barriers to the highest in over a century, China on Friday said it would slap additional 34% duties on all U.S. imports, escalating the global trade war to new, dangerous heights. Any hopes investors had of Federal Reserve Chair Jerome Powell coming to the rescue by signaling a readiness to cut interest rates - as Trump had appeared to pressure him into doing in a social media post earlier in the day - were dashed, as Powell stressed the "elevated risks" to both growth and inflation.