In the 19th century, international law recognized the right of a nation to use force to protect the lives and property af its nationals. In recent years the advent of regional and international organizations with their ancillary treaties has made the right to intervene to preserve property extremely tenuous.
Woods, Theodore K. Jr.
"U.S. Navy Regulations, International Law, and the Organization of American States,"
Naval War College Review: Vol. 23
, Article 10.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol23/iss2/10