The European trade commissioner has said US president Donald Trump's trade policies are "doomed to fail", and that the EU remains committed to open borders and economies.
Cecilia Malmstrom said most countries still share the same vision of open trade and investments.
She said that "building a wall is not the answer", adding: "The success of the EU relies on our open societies."
Ms Malmstrom said: "Those who in the 21st century think that we can become great again by rebuilding borders, re-imposing trade barriers, restricting people's freedom to move — they are doomed to fail."
Mr Trump's decision to pull out of the Trans-Pacific Partnership on Monday has been widely regarded as an indicator of a more enclosed US trade policy.