A fascinating article by Vice Admiral James "Sandy Winnefeld, Jr.  Key quote:

Perhaps most worrisome of the threats in the region is Iran's increasing ability to quickly launch ballistic missiles in an attempt to overwhelm Israel's organic defensive systems. This is, in my opinion, by far the most likely employment of ballistic missiles in the world today, and it demands our immediate attention in the event of a need for a U.S. or NATO response. This unpredictable adversary could be provoked by an isolated, and perhaps seemingly unimportant, event. Deploying land-based defensive assets is a necessary option, but it is costly and time-consuming. Meanwhile, sea-based missile defense has proved its capability, flexibility, and responsiveness in this arena. While U.S. Navy missile-defense capability need not be on-station all the time, it needs to be present in the theater conducting other missions, ready to respond quickly as needed. It would be wise for several of our very capable European partners to consider achieving this capability as well for their own defense against this threat.

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