In a ceremony to receive Iran new accredited Ambassador to East Timor Mahmoud Farazandeh credentials on Tuesday afternoon, President Horta made the remarks.
He said that it is time for all countries with nuclear arms to start seriously to abolish all their nuclear, chemical and biological arsenal.
He expressed hope that situation in Iran's nuclear dossier would not be more complicated.
Concerning recent developments in the Middle East, President Horta expressed hope that the developments can be led to establishment of democracy, peace and stability in the region.
Mahmoud Farazandeh, who is Iran's Ambassador to Indonesia, has been accredited to East Timor.
East Timor received its independence in May 2002.
Islamic Republic News Agency/IRNA NewsCode: 30710598