Actually it is geology and bathymetry.
You could say bilaterally Israel and Lebanon or multilaterally to include the entire eastern Mediterranean from Turkey down to Egypt and Cypress
No different than in the Arctic: USA, Canada, Denmark(Greenland), and Russia. Or in the Antarctic: Britain, Argentina, and Chile. Or in the South China Sea.
The US established her maritime borders in conjunction with the Magnussen Act in the 1970s.
I feel sure that the Department of State’s offices for Law of the Sea affairs, in conjunction with the Office of the Geographer (which has been calculating international limits in the seas for more than thirty years), has available numerous studies on this boundary. Whether or not the Department of State under Hillary Clinton will see fit to openly publish the studies is another matter.