TEHERAN: Iran successfully test-fired a long-range, upgraded Sejil 2 missile yesterday, state television reported, a move likely to add to tension with the West.

British Prime Minister Gordon Brown said the launch was of serious concern to the international community and underlined the case for tougher sanctions against Iran, the world's fifth-largest oil exporter.

Iranian Defense Minister Ahmad Vahidi said the test was part of efforts to boost the country's deterrent capabilities