One lesson from Viet Nam that isn't popular during this neocon era is that invasion is only part of a military plan. A political plan for an exit is also vital. The US had no such plan going into Viet Nam or Iraq and was stuck both places longer than all of WWII. Israel withdrew from Gaza under Sharon without a political plan, too. So it is no wonder that it didn't bring about hoped for peace. If Israel wants to have the peace it hopes for, it must have some planning to accomplish peace. The question then becomes one of what the mission objectives would be in an invasion. And will those mission objectives last more than a month after an Israeli withdrawal? Unless Israel wants a forever occupation, it must have an exit plan.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: A Vietnam called Gaza