Answer:
One of President Carter's greatest foreign policy successes was the Camp David Accords, which led to a peace treaty between Israel and Egypt in 1979. This was a significant achievement, as it ended decades of conflict between the two countries and established the groundwork for a peaceful relationship between the two nations.
On the other hand, President Carter's handling of the Iran Hostage Crisis in 1979-80 is often regarded as his greatest foreign policy failure. The seizure of the US embassy in Tehran and the taking of American hostages for 444 days was a major blow to US international prestige and influence. Despite his best efforts, Carter was unable to secure the release of the hostages during his presidency, and they were only released after his successor, Ronald Reagan, took office.
Overall, President Carter's foreign policy successes and failures were mixed. While he was able to achieve significant progress in some areas, he faced significant challenges in others.