This paper values a hostile government's option to expropriate a multinational's assets, using stochastic calculus. We assume that the exchange rate follows a geometric Brownian motion process and expropriation events are Poisson distributed through time.

This paper models the value of "embedded" options in foreign bonds, using stochastic calculus, by assuming that the exchange rate follows a geometric Brownian motion process and the arrival time of an early redemption of the bond by the issuer conforms to a negative exponential distribution. The...