Iran's foreign ministry spokesman Nasser Kanani expresses Tehran's readiness for a long-awaited prisoner swap with Belgium, days after the European country's Constitutional Court gave the green light for such a measure. The implementation of the deal would see Belgian aid worker Olivier Vandecasteele sentenced by Iran to 12.5 years for espionage swapped for Iranian diplomat Assadollah Assadi who was convicted of terrorism in Belgium. IMAGES AND SOUNDBITES