I want to know the answer to the following question:
When did Hamas assume it's power in the Gaza Strip?
All the background I'm provided with is that "Following June 2007, when Hamas assumed power in the Gaza Strip, Israel tightened its control of the Gaza crossings along its border, as well as by sea and air, and prevented persons from entering and exiting the area except for isolated cases it deemed humanitarian.". Is that enough to answer the question?
Answer: yes