Southeast Asia's biggest economies prepared on Tuesday to step up trade negotiations with Washington after it hit them with steep tariffs, despite a last-ditch flurry of offers to boost imports and slash levies on U.

The U.S.’s closest security allies in Asia, along with six Southeast Asian countries, have been given another three weeks to negotiate trade deals — or face higher tariffs.

Asia stock markets mostly advance on Tuesday, after US President Donald Trump announced new tariff rates on 14 countries, removing some uncertainty in the market.  He also signed an executive order extending the reciprocal tariff deadline to August 1 from July 9,