translate English to French: Unilateral sanctions were applied and investments were denied.  Travel to the country was discouraged so as to choke tourism, which was a promising source of foreign exchange.
Ils ont appliqué des sanctions unilatérales, interdit les investissements, dissuadé les éventuels voyageurs afin d'asphyxier le secteur du tourisme, qui était une source prometteuse de devises.