Taxation + Terror + Blockade = Gaza

We can understand why Israel would like Fatah to lead Gaza instead of Hamas, but this preference has turned into a policy of terror. The walled border between Egypt and Gaza explodes every time Mubarak builds a barrier to prevent fleeing Palestinians from escaping Israeli attacks and economic warfare.

Though Israel claims to have pulled out of Gaza and handed over sovereignty to the PA in 2005, Israel still 1) withholds tax revenues collected in Gaza by Israel, 2) has worked to cut-off international aid to Gaza, 3) restricts the movement of goods and services in and out of Gaza, 4) imposes banking restrictions on Gazans, and 5) cuts power to Gaza, leaving them in darkness. So how is Gaza not occupied by Israel?