No tanks, no bullets, no boots on the ground, but a mix of money (a lot of money) and engineers. China and its companies are betting on geopolitical corridors to expand their international clout and business opportunities. Though it is grappling with a creeping economic slowdown, the government in Beijing seems to be keen to fund a string of new, innovative transport arteries around the world. The first project under the spotlight is the overland corridor that should link up Kashgar, in China's western Xinjiang autonomous region, with the Pakistani port of Gwadar in the Arabian Sea. In July, Pakistan's Prime Minister Nawaz Sharif and his Chinese counterpart, Li Keqiang, agreed to build the 2,000 kilometer road link that would pass through the troubled southwestern Pakistani province of Balochistan, the inaccessible Karakoram mountains and onwards to the Xinjiang, also an area of some unrest. The scheme, worth US$18 billion, provides for a parallel railway to be built la...