Japan's Emperor Akihito waits for an arrival of Pakistan's President Asif Ali Zardari (not in picture) at the Imperial Palace in Tokyo February 23, 2011. Emperor Akihito was diagnosed with arteriosclerosis in his cardiac blood vessels on February 11, 2011 and will be under medication, the Imperial Household Agency said, adding it is expected the 77-year-old emperor will continue carrying out his normal duties and activities as usual, Kyodo news reports. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: POLITICS ROYALS HEALTH)