Taiwan Foreign Minister John Chang Hsiao-yen has expressed confidence negotiations between his Government and Tokyo would solve the dispute. But Mr Chang indirectly ruled out the use of the Taiwan Navy to press Taipei's cause. He also revealed government departments were studying how to handle anti-Japanese protests as well as trips to the archipelago planned for later this week by radical Taiwan groups. 'We have asked Tokyo unequivocally to exercise self-restraint and to rein in the activities of the right-wing organisations,' Mr Chang said in an interview with the South China Morning Post. He indicated that negotiations with Japan, which would begin shortly, would have 'major significance'. 'I think the negotiations will be of tremendous help in solving the problems,' he said. 'Tokyo has got the message. I hope the relevant officials in Japan will use their wisdom to act in a judicious manner.' The Foreign Minister particularly asked Tokyo to be careful in handling requests by right-wing organisations for the lighthouse they erected on a Diaoyu islet to be officially registered. When asked if Taipei would consider flexing its naval muscles should Tokyo persist, Mr Chang said Taipei would stick to 'rational, clear-headed and peaceful methods' and that only diplomatic means were considered. 'The mainland's Navy is even stronger than ours; isn't it true that the mainland can also dispatch their Navy there?' he asked. Mr Chang, however, reiterated that Taipei would not co-operate with Beijing in negotiations with the Japanese because this would complicate the issue. While Taipei had no diplomatic relations with Tokyo, his Government had effective channels to talk to the Japanese. Mr Chang denied allegations in the Taiwan and Hong Kong press his Government was only asking Tokyo to stop harassing Taiwan fishing boats - and playing down the issue of Taiwan's sovereignty over the islands. 'Our position on sovereignty over the Diaoyu Islands is clear and resolute,' he said. 'But we make a distinction between things that can be solved quickly and those that could drag on for a long time.' Mr Chang added that while the Diaoyu dispute with Tokyo had lingered for over 20 years, he hoped matters such as the delineation of fishing grounds for Taiwan fishermen could be solved quickly.