Arms trade expert William Hartung of the New America Foundation says US arms were used in 18 of the 25 major wars in 2006 and 2007, with weapons sold to at least a dozen regimes in developing countries that are either undemocratic or commit serious human rights abuses. These include Thailand, Ethiopia, Morocco, and Oman. 

Hartung says some countries join the arms race for no apparent reason. "Unless you think Romania is going to start bombing terrorist training camps, F-16s don't make much sense," he said by telephone. "Many weapons have no justification. It's a one-size-fits-all justification." LINK