Japan's Nikkei 225 gained 0.8% on Tuesday, helped by a weakening yen and plans for increased military spending that sent defense stock prices rising. Other Asian-Pacific markets were mixed. Hong Kong's Hang Seng Index slid 0.2%. Australia's S&P/ASX 200 rose 0.3%. China's Shanghai Composite fell 0.5%. South Korea's Kospi edged up 0.2%. India's Sensex was down 0.2%.