Not literally, obviously - but still a violent expression. The meaning must be that Netanyahu only understands the language of brute force. I´m not sure that this is an accurate description. And I don´t think that this is a good time for Barak and Meridor to leave the government. Netanyahu is the winner in the polls. We have to wait and see how the palestinian leaders react to Obamas harsh words about their UN september plan.
Egypt says verdict in Al-Jazeera case expected Saturday (AP)
from the article: Netanyahu's peace stance is running Israel into a wall