The left lost because it started the settlements and continued them after the Oslo accords in contravention of the agreements. The pullout from Gaza was a sham, and the rockets start flying from Gaza after Israel intensified the siege following the election of Hamas in open, legitimate elections. The left has lost because it became a Likud lite!
U.S.-led coalition conducts 14 airstrikes against ISIS targets in Iraq, Syria (Reuters)
from the article: The folly of Israel's center left