what was the affect on the world of the iran-contra affair?
"Internationally the damage was more severe. Magnus Ranstorp wrote, "U.S. willingness to engage in concessions with Iran and the Hezbollah not only signalled to its adversaries that hostage-taking was an extremely useful instrument in extracting political and financial concessions for the West but also undermined any credibility of U.S. criticism of other states' deviation from the principles of no-negotiation and no concession to terrorists and their demands.[51]
"In Iran Mehdi Hashemi, the leaker of the scandal, was executed in 1987, allegedly for activities unrelated to the scandal. Though Hashemi made a full video confession to numerous serious charges, some observers find the coincidence of his leak and the subsequent prosecution highly suspicious."
Source:
http://en.wikipedia.org/wiki/Iran-Contra_affair