Is blockading a hostile territory the same as occupation?
to the extent Israel does it, yes. This isn't like US border patrol with Mexico, Palestine is split in two and Israel does not allow movement between them. Imagine Canada blockading all travel to and from Alaska, including international trade. Now imagine that Alaska has much of its infrastructure destroyed by Canada, to a degree causing humanitarian crisis. Then imagine that even humanitarian aid is prevented from entering. Now you have an Alaska occupied by Canada, America does not have control of that Alaska anymore. Throw in some actual land capture over time as well.