The Panama Canal is nearing the end of its days, and the need for a new canal is growing as each year passes.
Clune, William F.
"School of Naval Warfare: Where Shall We Build the new Sea-Level Canal?,"
Naval War College Review: Vol. 20
, Article 3.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol20/iss1/3