The Dow tumbled 900 points on Tuesday as investors assessed the impact of Trump's intensifying push to take control of Greenland.

European leaders are criticizing President Donald Trump and his proposed tariffs, pledging solidarity with Greenland at the World Economic Forum.

The heads of state of all 27 European Union nations will meet for an "extraordinary meeting" later this week, European council president Antonio Costa said on Sunday.

The organization Support Greenland is selling merchandise that benefits Greenlandic causes, like youth resources and sustainable tourism.

All three major Wall Street indexes closed well down on Tuesday, joining other global stock markets in a broad selloff triggered by ​concerns that fresh tariff threats from President Donald Trump against Europe could signal renewed market volatility.

As the EU calls Trump's threat to tariff allies for rejecting his bid for Greenland a mistake, Denmark's leader laments "being threatened by our closest ally."

Trump has argued that the Arctic island is critical for U.S. security given threats posed by Russia as well as China.

Stocks tumbled in early trading on Tuesday as President Donald Trump threatened tariffs on multiple European countries as part of a push for U.S. control of Greenland. The Dow Jones Industrial Average fell 550 points, or 1.1%, while the S&P 500 declined 1.2%. The tech-heavy Nasdaq dropped 1.3%.

US President Donald Trump said he had agreed to a meeting of “various parties” over Greenland at the World Economic Forum in Davos, after holding a “very good” telephone call with Nato secretary-general Mark Rutte.