Did Israel Over React Just a Tad?

Headlines read: Israel launches offensives in Gaza and Lebanon over the capture of Israeli soldiers. Excuse me, but that was so uncalled for. Can you imagine if the United States went to war because of "one solider"? Don't you think that maybe they over reacted just a little bit? Ever heard of "diplomacy"? Giving an ultimatum and then driving a TANK through the neighborhood to make a point is supposed to accomplish what? This whole affair was so unnecessary in my humble opinion. I don't get the impression either side really wants peace.