One of the most divisive wars in American history ended 25 years ago, but the United States is still dealing with the fallout. Some historians say that the Vietnam War was so drawn out and costly that American policy-makers have since turned fearful of military involvement in another potential quagmire. Others note Americans' diminished trust in government because politicians and military leaders lied about the war. But some observers say the vigorous U.S. response during the Persian Gulf War helps prove the United States isn't afraid to use its military power when necessary. And they blame other factors, like Watergate and the Iran-contra scandal, for citizens' increased distrust of government.