Questions: Hostilities between what two Middle Eastern nations have been marked by failed peace accords, military aggressions, and terroristic acts?

The answer is Palestine and Israel.

Explanation for each option:

1. Iraq and Lebanon: While both Iraq and Lebanon have experienced significant internal and regional conflicts, there is no long-standing direct hostility between these two nations marked by failed peace accords, military aggressions, and terroristic acts against each other.

2. Libya and Turkey: Libya and Turkey have had complex relations, especially in recent years with Turkey's involvement in the Libyan Civil War. However, their interactions do not fit the description of long-standing hostilities marked by failed peace accords and terroristic acts against each other.

3. Syria and Egypt: Syria and Egypt have had periods of both cooperation and conflict, particularly during the mid-20th century. However, their relationship has not been characterized by continuous hostilities, failed peace accords, and terroristic acts against each other in the same way as the correct answer.

4. Palestine and Israel: The hostilities between Palestine and Israel are well-documented and have been marked by numerous failed peace accords, military aggressions, and terroristic acts. The conflict has its roots in the early 20th century and has continued to the present day, involving complex political, territorial, and cultural issues. Notable events include the Oslo Accords, the Intifadas, and ongoing disputes over settlements and borders.