First statement - agreed.
BUT - you say...."....Merkel's position considerably weakened......."
Some actual documentation that shows a more accurate viewpoint:
https://www.washingtonpost.com/world/europe/merkels-party-wins-election-in-rivals-german-heartland/2017/05/14/a3de8edc-3913-11e7-a59b-26e0451a96fd_story.html?utm_term=.cf9e32da5c9b

Key quote - "......center-left Social Democrats have to be prepared for a tough campaign after suffering a heavy blow in their traditional heartland.  Martin Schulz’s Social Democrats lost Germany’s most populous state, North Rhine-Westphalia, to Merkel’s Christian Democratic Union on Sunday. They had governed the state for all but five of the past 50 years."

Couple that with Macron's win by 2-1 and your opinion is what is *WEAK*.

Experts see Trump backsliding - not the other way around.