TIMELINE-Trump trade war: Tariff deadlines and key upcoming events

July 11 (Reuters) - The twists and turns in U.S. President Donald Trump's tariff policies have not only rattled global financial markets but have also taken investors on a roller-coaster ride.

Adding to the uncertainty are tariff-related legal challenges and Trump's assertion that he would hammer out bilateral deals with trade partners.

Earlier this week, Trump ramped up his trade war telling 14 nations , from powerhouse suppliers such as Japan and South Korea to minor trade players, that they now face sharply higher tariffs from a new deadline of August 1.

He also said he would impose a 50% tariff on imported copper and Brazilian goods sent to the United States.

On July 10, Trump said the U.S. would impose a 35% tariff on imports from Canada next month.

Here's a timeline for key upcoming events and dates that could have a bearing on the U.S. tariff policy:

July 14:

The EU's 90-day pause on its own retaliatory tariffs to end.

July 20-22:

Philippines' president to discuss tariffs in meeting with Trump in Washington.

July 21
Original date set by Canadian Prime Minister Mark Carney to negotiate trade deal with Washington.

August 1:

A higher tariff rate on imports from several countries is set to take effect, following a postponement from the original July 9 implementation date.