How did the seizure of the u. s. embassy by iranian students affect u. s. cold war policy

The crisis of hostages at the American embassy in Tehran was the worst foreign policy crisis of president Jimmy Carter.  66 American diplomats and citizens were held as hostages by Iranian revolutionary militants. The Iranian Islamic revolution was young then. Hostages were kept in custody by the kidnappers for over a year. The US government and other diplomatic allies attempted to negotiate with the Iranians but to no avail. The US administration froze Iranian assets in the US, stopped buying oil from Iran and launched a diplomatic offensive. The crisis was a PR disaster for a president that was looking for reelection. Carter sent  a rescue mission that failed due to poor planning.  The issue poisoned Iranian-American relations for decades. The crisis contributed to a hardening of US Cold War policies and a conservative turn in politics, all expressed in the election of Ronald Reagan as president on November 4, 1980.

Explanation:

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.