The president of the European Council has torn into Donald Trump, warning that that the US president is a bad friend who acts with capricious assertiveness.
Speaking on Wednesday Donald Tusk said he was grateful for Mr Trump because he had made us realise that if you need a helping hand, you will find one at the end of your arm.
Mr Tusk told reporters at a summit in the Bulgarian capital Sofia that Europe had to be prepared to go it alone in some circumstances because the new shift in American politics made the US an unreliable ally.
EU leaders are gathering at the Western Balkans summit to discuss the regions future, but they will also hold talks about how to respond to renewed US aggression on trade and foreign affairs.
The warning comes weeks after the US pulled out of a key deal on Irans nuclear programme, unilaterally moved its embassy to Israel to the disputed city of Jerusalem, and threatened new tariffs against European steel and aluminium producers.
Mr Tusk said he wanted Europe to stick to our guns against Mr Trumps new policies, and called per a permanent exemption from the metals tariffs. He branded a US move to use national security grounds to justify the protectionism absurd and not based in reality.
Besides traditional political challenges, such as the rise of China or the aggressive stance of Russia, we are witnessing today a new phenomenon: the capricious assertiveness of the American administration, Mr Tusk said at the start of the summit.
Looking at the latest decisions of president Trump, someone could even think: with friends like that, who needs enemies? But frankly speaking, Europe should be grateful for president Trump because thanks to him we have got rid of all illusions. He has made us realise that if you need a helping hand, you will find one at the end of your arm.
He continued: Europe must do everything in its power to protect, in spite of todays mood, the transatlantic bond, but at the same time we must be prepared for those scenarios where we have to act on our own. We have enough potential to rise to the challenge, but what we need is more political unity and determination.