Previous market meltdowns have been spurred by shocks to the system like Dubai World's debt...

|By:, SA News Editor

Previous market meltdowns have been spurred by shocks to the system like Dubai World's debt crisis - but even if fallout is contained to the emirate and U.K. banks, Dubai is delivering a wake-up call about sovereign risk: "Investors need to remember that governments can and will change the rules when necessary. Asset prices, buoyed by a faith in policy support, may need to adjust to that."