Restricting Trade Rather than restricting the proliferation of  unmanned aircraft systems (UAS), export restrictions are helping China in its bid to gain a foothold in the market with copycat aircraft, top officials at General Atomics Aeronautical Systems warn. Under limits imposed by the multilateral Missile Technology Control Regime, the California company says it is nearly impossible to get approval to sell medium-altitude unmanned systems to many countries outside of NATO nations..Read More at Aviation Week