Although aviation experts dismissed Russian intelligence's suspicions of a US hand in the May 9 plane crash in Indonesia, the many unanswered questions about the crash fuel conspiracy theories.
The late-model Russian Sukhoi SuperJet-100 was meant to revive Russia's aging and accident-prone airplane fleet. It disappeared on a demonstration flight.
Thanks in part to soybeans and iron ore, cars, and coffee, Brazil has overtaken Britain as the world's sixth largest economy - though there are some clouds on the horizon.
If terrorists get hold of some of Qaddafi's 20,000 shoulder-fired missiles and manage to bring down an airliner in the United States, the economic repercussions would be huge. Antimissile systems exist, but so far US airlines have balked at the expense.