Mr. Heinbecker is trapped in the 1960's. 
Germany is no longer any threat to its neighbours. In fact, it leads the EU in immigration and is a strong promoter of human rights and freedoms and has been for many years now. The EU has morphed from a security union into a bloated, bureaucratic org. interfering in its members trade, immigration and Gov't policies. Brexit was a logical response to it.
NATO is not obsolete, but Trump is correct when he states that member countries are not pulling their financial weight and that NATO has ignored the terrorist threat.
Trump's criticism of Merkel allowing 1.2 million refugees to immigrate to Germany might seem harsh, but there have been incidents with some of them and even Merkel has apologized for that decision.  
Finally, there is no mention of Obama's weak responses to Russian and Chinese aggression during his Presidency, which is the main reason why Putin and Xi Jinping have been able to dominate and intimidate their neigbours.