North Atlantic Treaty Organisation is the foundation of American military strategy and foreign policy and Trump appears ready to destroy it to forge a relationship with the Russian dictator who he idolizes, Wilson said.
European Council President Donald Tusk directed a message at Trump, saying "it is always worth knowing who is your strategic friend and who is your strategic problem".
Mr Tusk recalled that the Europeans are spending more than Russian Federation and as much as China on defence.
"Dear America, appreciate your allies, after all you don't have all that many", Tusk said, according to the Associated Press.
The European Union is the top export market for the United States at $501 billion in goods and services in 2016, the latest available figures provided by the Office of the U.S. Trade Representative. "Who would think", the president said.
While Mr Trump is looking to improve relations with Russian Federation, there has been alarm at the deteriorating climate with his allies in Europe and what he might agree to with President Putin.
He tweeted on Tuesday morning (Wednesday NZT): "Getting ready to leave for Europe".
Henderson hopeful on fitness for World Cup semi-final
England too left Italy 28 years ago feeling that the team featuring Gary Lineker and Paul Gascoigne could have gone all the way. As we regroup, he turns to me and says, "right that's enough, time to lift the tempo, let's get about them".
'Come to Russia,' FIFA ambassador tells England fans
She said that after Croatia joined the EU in 2013, 'I wish we start living the lives of people in the European Union'. When they face England, both sides will already know whether France or Belgium have reached the final.
UK woman dies after being exposed to nerve agent novichok
Russian state television reports on July 9 nonetheless continued to cast doubt on the British investigations into the poisonings. They are not showing any signs of having been exposed to the nerve agent, and are being screened as a precaution.
Thai cave rescue: All 12 boys and their coach rescued
Earlier Tuesday, Thai navy SEALS said a ninth boy had been brought out of the cave on the third day of the rescue effort. Nineteen divers are involved in the rescue attempt and officials said water levels remain stable, unaffected by the rain.
Truck driver charged in Canada hockey team crash with 16 dead
The tractor trailer he was driving crashed into a bus carrying members of the Humboldt Broncos junior hockey team, aged 16 to 21. Saskatchewan RCMP has announced that an arrest has been made in connection to the Humboldt bus crash, that killed 16 people .