I have attended meetings of Yachad and other groups where leaders of Yachad have been present, and at all of them they have either been angry with Israel or Israelis, or have tried to undermine Israel. I was educated at the Hebrew University in 1973-6 and most of that the time since then have supported Labour and currently support Yesh Atid. I am not a right-winger. When I see a group of non Israelis attacking the positions of Israel and of most Israelis, while supporting without (in my hearing) any criticism the positions of the Palestine Authority, then my conclusion is that they are NOT pro-Israeli. In my view calling themselves pro-Israel is just 1984 style double-speak. The Zionist Federation aren't frightened of them, they just don't believe that they are a Zionist group. Speaking for myself I don't believe that they are a Zionist group either, but I most certainly do believe that Peace Now is a Zionist group.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: U.K. Zionist Federation refuses to accept left-wing pro-Israel movement