Dubai luxury developer Nakheel PJSC on Sunday unveiled plans for a tower that will stand a full kilometer (3,280 feet) in height, beating the world record that’s already held by the booming city-state.

Sara Nunnally says oil is having a major influence in Britain and Dubai, and creating new investment opportunities in both. One is running out of supplies, the other can’t spend its income fast enough. In Britain, this has prompted a new round of exploration permits, with Egdon Resources (LON:EDR) leading the chase. Meanwhile, Dubai’s venture into the luxury international hotel market could see considerable expansion in the sector. More from Sara…

The Rude Awakening’s Joel Bowman says the real estate bubble in his new home of Dubai is unsustainable. Unimaginable oil riches are being spent at unimaginable speeds, sending house and rental prices through the roof. But if the lesson from the U.S. has taught us anything, it is that property speculators aren’t going to win forever.

ETFs (exchange-traded funds) give US investors unprecedented access to frontier markets - less accessible but still ‘investable’ high-growth economies in the developing world.

But you need to tread carefully, says Sara Nunnally in Taipan’s Emerging Markets blog. Although there is a bunch of so-called “frontier ETFs” out there to chose from, not all of them make good investments.

If ETFs are your thing, stick to those focused on the Middle East and North Africa, says Sara…

Dubai could shortly resemble a jungle of half-completed skyscrapers, with 10% occupancy rates and bankrupt landlords. Its landing would be painful, and, potentially, not long delayed. It’s not an investment for the risk averse.

Editor’s Note: Money Morning’s William Patalon III says Dubai’s oil-sponsored development bonanza could yield some great returns on well-placed investments. At the top of the list is Dubai’s ambitious $82-billion plans for the aerospace industry.