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

July 31 (Reuters) - The twists and turns in U.S. President Donald Trump's tariff policies have not only rattled global financial markets but also taken investors on a roller-coaster ride.

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

Last week, the U.S. struck a framework trade agreement with the European Union, halving the earlier threatened rate to a 15% import tariff on most EU goods and averting a bigger trade war between the two allies that account for almost a third of global trade.

Earlier this week, Donald Trump imposed a 50% tariff on certain copper imports and suspended the "de minimis" exemption on low-value commercial shipments, the White House said.

With a blitz of tariff announcements this week, ranging from changes to previously threatened levies on imports from Brazil and South Korea to the 25% tariff rate on goods from India, Trump presses on with his bid to reshape global trade.

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

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.

August 8-10:

Trump said the United States would start imposing tariffs and other measures on Russia " 10 days from today ", if Moscow showed no progress toward ending its war in Ukraine.

August 12:

Trump will decide whether to extend a trade truce with China that expires on August 12, or potentially let tariffs shoot back up to triple-digit figures, escalating a trade war between the world's two biggest economies that threatens global growth.

August 29:

Under an executive order suspending the "de minimis" exemption, packages valued at or under $800 sent to the U.S. outside of the international postal network will face "all applicable duties".