Democracies have a weak point in that they value human life. Islam and Hamas value death and martyrdom. Hamas will not hand over hostages as they are bargaining chips. the population of Gaza will not intervene as any death brought upon them is a gift of a martyr for Allah.
Gaza must be destroyed and all of Hamas, their supporters, enablers and human shields eliminated and that will probably wake up the Arab world to reality. It may not as demonstrated in Syria and Iran-Iraq must this would be a defeat to an infidel and may work.