SINGAPORE -- From Singapore to South Korea, investors are shying away from property deals involving office buildings, malls and other commercial assets, fearing that interest rate increases and geopolitical turmoil could threaten global growth. A November report by commercial real estate and investment management company JLL showed that commercial real estate investment activity in the Asia-Pacific region fell 22%, year-on-year, in the July to September period, representing the lowest quarterly total since the second quarter of 2010.