President Donald Trump posted letters to the leaders of Mexico and the European Union, saying they had not done enough to head off the new tariffs.

By Sukriti Gupta, Sanchayaita Roy and Shashwat Chauhan (Reuters) -European shares closed lower on Friday, as losses in banks and healthcare stocks weighed at the end of a week marred by U.S. President Donald Trump's tariff announcements,

EU said it was prepared to retaliate with tariffs on hundreds of American products, from U.S. beef, auto parts and beer to Boeing airplanes.

In a wide-ranging interview with NBC News, Trump talked about tariffs, sending Patriot missiles to NATO for Ukraine and how he'll sell his recently passed "big, beautiful bill."

The European Union braced on Friday to receive a letter from U.S. President Donald Trump, outlining planned duties on his largest trade and investment partner after a broadening of his tariff war in recent days.

"The EU and China are broadly on a colliding trajectory in terms of their trade and industrial policy concerns," he told CNBC. Bones of contention include the challenge of China's overcapacity and trade diversion to Europe, Stec, who is also head of the Mercator Institute's Brussels office, explained.

Plus, the Justice Department has subpoenaed 20 doctors and clinics involved in “performing transgender medical procedures on children.”

President Trump is amping up trade threats, again unveiling a new batch of letters to country leaders outlining tariffs on goods imported from their countries beginning in August and a warning to BRICS nations.