The European Union is keen to partner with countries around the world and is "open for business," European Commission chief Ursula von der Leyen said Tuesday.

Trump's second presidency dominated proceedings at the World Economic Forum amid ominous warnings over the looming threat of trade tariffs and his decision to pull the United States out of the Paris climate agreement.

The European Commission wants to dissuade innovative start-up firms from moving to the U.S. to grow by creating rules that would allow them to easily operate across the 27-nation European Union, the head of the Commission said on Tuesday.

Officials and business executives at the annual gathering in Switzerland said the fight against global climate change would continue with or without the United States.

The Commission informed journalists on Jan. 3 that von der Leyen was suffering from “severe” pneumonia, but did not disclose that she had been hospitalized, even after direct questioning. German newswire DPA broke the news on Jan. 10, which is the same day von der Leyen left hospital, according to Pinho.

President Donald Trump has given everyone at Davos something to talk about with his actions on the first day of his second term.

Ukraine’s President Zelenskyy asked whether the US saw NATO as being necessary as he addressed the World Economic Forum in Davos. Leaders from China, Ukraine and Germany have taken the stage on day one.

The European Commission plans to propose a unified regulatory framework, known as the '28th regime', to streamline operations for innovative companies across the European Union. This initiative aims to eliminate national barriers and create a more attractive environment to retain startups and enhance technological advancements.

Greenpeace activists staged a brief climate change protest just outside the main hall of the World Economic Forum's annual meeting on Thursday, as business and political leaders gathered for this week's event in Davos.

Speaking in Davos, Ukrainian President Volodymyr Zelenskyy questioned whether Trump was committed to NATO and European security.

In his debrief to the European Parliament on the December European Council, President Costa highlighted the main topics discussed by the EU leaders including Ukraine, enlargement and the EU's role in the world.