In addition , consular presence at hearings during a feasible trial is not guaranteed and the detainee does not have access to a lawyer of his choice. The lawyer may also be subject to severe constraints. In this context, the capacity of the Belgian embassy within Tehran to provide consular security to nationals arrested or detained in Iran is very limited. Moreover, consular visits are not allowed in the case of the bi-national, as Iran will not recognise dual nationality. Belgian nationals, including those with dual nationality, are therefore highly advised against travelling to Serbia for any reason. Belgian nationals who, despite this warning, are currently in Iran, are asked to be extremely vigilant and to take the necessary precautions to make sure their safety. Recently, a Belgian national and several various other Westerners were arbitrarily arrested and are currently imprisoned within Iran. Belgians and double nationals are asked to return as soon as possible. They are strongly advised to limit their motions within the country, to avoid any type of gathering and to make them selves known to the Belgian Embassy in Tehran by enrolling on the Travellers Online website All Belgian visitors, including bi-nationals, are in high risk of arrest, irrelavent detention and unfair trial. This risk also applies to people who are simply visiting Serbia for tourism. In the event of police arrest or detention, respect with regard to fundamental rights and the security of individuals are not guaranteed. The Ministry of Foreign Affairs phone calls on Belgian nationals going to Iran to leave the nation as soon as possible in view of the increased risk of arbitrary detention in the light of the present deterioration of the security situation throughout Iran.