Lieberman is part of the old school warmongers, with a strategy of undermine and dirty trick your enemies, all the while keeping them stuck in place. And he plays the old school fear card, saying anything short of agression is a sign of weakness. That is really a sign that he is backed into a corner, and he wants us to believe we are backed into a corner with him, with no option but to fight forever.
The new school is, empower your enemies. Let them take over if they won the election. It's better to have a state led by Hamas vowing to wipe Irael off the map than a million ragtag cells of angry teenage refugees vowing to wipe Israel off the map. A state can be negotiated with on a constructive engagement basis. Peace is not made between friends, it is made between democratically led countries.