Myanmar's opposition leader Daw Aung San Suu Kyi has lost her security personnel and visits by a physician have been further restricted, U.N. Secretary General Kofi Annan said Thursday. He said in a statement that he was "seriously concerned" by the moves by the government in Myanmar (Burma) to isolate Suu Kyi, a Nobel Peace Prize laureate who has been demanding democratic reforms in the military-led regime. "The Myanmar authorities have the responsibility to ensure Daw Aung Suu Kyi's security and well being," he said. Suu Kyi has been held under house arrest for years for challenging the military, which had promised in the face of pressure from Asian countries and the international community to lift all restrictions on her and embark on democratization and national reconciliation. But apparently those steps were not taken. -