"So what's stopping Palestinians from putting pressure on them?"
What would you do if you were the Palestinian in this question. seriously. Hamas is not held an election since 2006 what would you do to put pressure on Hamas while you lived in the Gaza strip?
The answer to your question is lots of stuff is stopping the Palestinians from putting pressure on Hamas.
"So what's stopping Palestinians from putting pressure on them?"
What would you do if you were the Palestinian in this question. seriously. Hamas is not held an election since 2006 what would you do to put pressure on Hamas while you lived in the Gaza strip?
The answer to your question is lots of stuff is stopping the Palestinians from putting pressure on Hamas.