I don't see it similar to ww1

It is similar only in that nobody knows what will happen. Trump and Netanyahu have opened a can of worms. They cannot control what happens now. They thought they could. What will the consequences of this war be? I don't know. Nobody knows. In that sense it is like WWI, or Vietnam, or Russia's war with Ukraine. Once the shooting starts and people die, what happens? No one knows for sure.