Israel made many attempts for peace, people of Gaza are being cynically used as human shields for a terror base, by Iran, and even by Egypt who signed peace agreement with Israel but its a cold peace.
Israel gave entire Sinay back to Egypt, and Egypt refuse to take Gaza. The left is as a terror base close to Israel. Now they are closing the gates and don't let Palestinians leave Gaza. Israel is responsible to defend its nation. Letting people from Gaza and Genin work in Israel while they kill us is absurd. Why can't the people of Gaza work in Egypt? Why they prefer to come to Israel? The gates of Israel should be closed and if Egypt care for the Palestinian children they should take them instead of sending oil to Hamas missiles.
Some points to think about.
RE: How big is Israel's military really? Hint: Wikipedia is WRONG!