"She believed that proper diplomatic preparations had not been made; she did not want to be part of an anti-China display; she opposed Mr. Trump's idea of inviting the Russian president, Vladimir V. Putin; she did not want to be seen as interfering in American domestic politics", the official was quoted as saying, adding the chancellor was shocked by Trump's unilateral decision to pull out of the World Health Organization.
"And the president's (Trump) insulting dismissal of one of our most important relationships because of a personal vendetta confirms that he lacks moral leadership, respect for our allies, and understanding of our national security interests, Engel said".
Wadephul also spoke of a "further wake-up call" to Europeans to position themselves better in terms of security policy.
President Donald Trump has ordered the United States military to remove almost 9,500 troops from Germany, a senior U.S. official said on Friday, a move likely to raise concerns in Europe about the USA commitment to the region. Dr Merkel's decision to stay away from a Group of Seven meeting that Mr Trump had planned to host in Washington this month had no influence on the planned pullout, the person said.
The White House has asked for a substantial reduction of U.S. military personnel stationed in Germany, according to a USA defense official. The transfer is reportedly due to Germany not investing enough money into its defense.
The White House did not immediately confirm the reports, but spokesman John Ullyot said in a statement that the United States remained "committed to working with our strong ally Germany" on defence and other issues.
In April 2019, he struck a more conciliatory tone. Currently, Germany could house as many as 52,000 American units during training exercises and rotations.
"Everybody profits from the cohesion of the North Atlantic Treaty Organisation alliance, only Russian Federation and China benefit from dispute", Mr Wadephul said.