Washington, July 24 -- US President Donald Trump has once again warned that countries refusing to open their markets to Americahttps://news.htsyndication.com/images/common/save.pngn products will face even higher tariffs. This week, several nations, including South Korea, rushed to finalize trade agreements with the US before the August 1 negotiation deadline.

In a strongly worded post on his social media platform Truth Social, Trump stated, "I WILL ONLY LOWER TARIFFS IF A COUNTRY AGREES TO OPEN ITS MARKET. IF NOT, MUCH HIGHER TARIFFS! Japan's Markets are now OPEN (for first time ever!). USA BUSINESSES WILL BOOM!"

His post came just a day after he announced a new trade deal with Japan, which includes a 15 percent "reciprocal" tariff on ...