—Asian stock markets mostly advanced Tuesday after President Trump unveiled his three-week extension to negotiate trade agreements, spurring mild hopes for deals following punishing U.S. tariffs. Japan’s Nikkei 225 index gained 0.3%, and Hong Kong’s Hang Seng gained 1%. China’s benchmark Shanghai Composite gained 0.7%.

What level of tariffs will the U.S. impose on imports and when? Stock futures were falling early Monday as markets were roiled by threats of new levies but also confusion over the deadline for the proposed duties.

The dollar firmed against other major currencies on Monday, after remarks from U.S. officials offered little clarity on the outlook for tariffs, days ahead of a crucial deadline. Most U.S. trade partners face the prospect of steeper duties at the end of the 90-day moratorium on U.

U.S. President Donald Trump on Monday reiterated that countries that don't make trade deals with the United States will get letters, informing them of the tariffs they will be charged if they export products to the United States.