Goods from illegal Israeli settlements, worth billions of dollars, are now sanctioned. Led by the UK, several European countries and Canada have announced a ban on trade with illegal settlements in the occupied West Bank. They say Israel's actions in the Palestinian territory undermine the possibility of a two-state solution. They have also condemned the sharp increase in settler violence. Targeting illegal settlements isn't new, but this time Israel has been quick to respond. It's announced the closure of the British consulate in occupied East Jerusalem, and threatened further measures. But will the import ban make a difference on the ground?