After listing more of their proposals, Nigel finished: "So the whole European project is crumbling, the third biggest country in the eurozone is in open revolt against the whole system and all Donald Tusk can do is say a few sad words about Donald Trump".
Tusk's comments come amid increasingly souring relations between the European Union and US, over trade disagreements, the Iran nuclear deal, and the US Embassy's relocation to Jerusalem.
The President of the European Council slammed the US President, warning Trump is a bad friends who acts with "capricious assertiveness".
Washington and Brussels have been at loggerheads over a number of issues since Mr Trump was inaugurated in January 2017, most recently a trade war of aluminium and steel tariffs and the Iran nuclear deal.
Mr Tusk said: "Besides traditional political challenges, such as the rise of China or the aggressive stance of Russian Federation, we are witnessing today a new phenomenon: the capricious assertiveness of the American administration".
US President Donald Trump has "rid Europe of all illusions" by quitting the Iran nuclear deal and driving trade disputes, the European Union chairman said on Wednesday, underlining the depth of trans-Atlantic discord.
Europe exemplifies the use of multilateral worldwide negotiations, to settle everything from global trade rules to the threat of Iran developing nuclear weapons.
Alexander-Arnold makes England World Cup squad; Hart and Wilshere miss out
England begin their Group G campaign against Tunisia in Volgograd on June 18th, before games against Panama and Belgium . Chelsea midfielder Ruben Loftus-Cheek gets the nod ahead of the likes of Jack Wilshere and in-form Jonjo Shelvey .
Members of the European Council will discuss ways they might be able to salvage the Iran nuclear deal now that President Trump has opted to back out of the agreement during their summit in Bulgaria this week.
Raf Casert and Lorne Cook are Associated Press writers.
Mr. Trump's decision last week to abandon the Iran nuclear deal - negotiated by Iran and the United States, Britain, China, France, Germany and Russian Federation - left Europe scrambling to preserve the agreement. In order to be the subject and not the object of global politics, Europe must be united economically, politically and also militarily like never before.
European diplomats have sought to play down expectations of Tuesday's meeting, stressing the enormous challenge of finding a way around USA sanctions punishing foreign businesses trading with Iran, which have global reach. Tusk said he wanted Europe to "stick to our guns" and described Trump's justification of tariffs on the basis of national security as "absurd".
In dinner talks in the Bulgarian capital of Sofia, EU leaders will be briefed on possible incentives to keep Tehran in the nuclear agreement, even after a key player like the US pulled out.
'This means a permanent exemption from USA tariffs on aluminium and steel if we are to discuss possible trade liberalisation with the US.