President Trump has taken an unconventional approach to trade negotiations by sending form letters to foreign leaders.

For most world leaders, tariff letters from US President Donald Trump mean a big headache. But for one Southeast Asian general, the communique is being spun as welcome recognition of the embattled, isolated and reviled junta he leads.

Mexico's president on Monday hit back at U.S. criticism that her government was not doing enough to combat fentanyl, calling for the United States to do more to arrest drug traffickers on its own turf and stop the flow of weapons south across the border.

Analysts said the muted market response was because many investors expected the levies to settle at lower levels after negotiations.