These two phrases were common jargon used by the American right during the Vietnam war. Only a persistent and vocal left wing, including the media, acted as a safety valve in America and forced a radical change in American policy regarding the Vietnam war. In hindsight this was the only reasonable and sane move. This scenario is not possible in Israel. There is no persistent and vocal left wing and the media all have government censors. Israel has no safety valve. The results of this scenario are disasterous.
Opposition leader Isaac Herzog calls on government to allow Syrian refugees into Israel (Haaretz)
from the article: What Israeli hasbara won't hide