Good question!!!! Unfortunatlly the answer is not very simple. According to israeli law, as enshrined in its Declaration of Independence, and this, BTW is the ONLY place that israel has EVER officially claimed its borders are those of the UN partition plan. In practice however, israel has defined its borders as those of the so called "green line",but as mentioned, this is ONLY in practice, not in israeli law. On the other hand, israeli law SPECIFICALLY exludes the territories occupied in '67 (save East Jerusalem and the Syrian Golan Heights, which it illeagally annexed) from israel. Hence the term "israel proper" israel has repetedlly confirmed to the UN that it "continues to be the occupying power in both the West Bank AND the Gaza Strip. This was confirmed by israel recently (after israel's "disengagement" from the Strip) in response to a formal UN request to clarify the status of the Gaza.
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from the article: EU: West Bank goods aren't Israeli