Silva added that this is an internal affair of Spain .
Portugal - Foreign Minister Augusto Santos Silva declined to comment on the referendum , but he believes the Spanish government will be able to resolve the issue in agreement with the Spanish constitution and law .
Foreign Minister added that this is an internal affair of Spanish .
Portugal - Foreign Minister Augusto Santos Silva declined to comment on the referendum , but he believes the Spanish government will be able to resolve the issue in agreement with the Spanish constitution and law .