Angela Merkel is a very intelligent person, and she listens to constructive reasoning, logic, facts and good arguments. She is pragmatic. Hence, the communication with Netanyahu would and should work just fine. But the PA leaders are useless - they are intransigent.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Netanyahu's office: There is no Israel-Germany diplomatic crisis