Arab Republic of Egypt (modern)
Who & why: after the Federation of Arab Republics dissolves and Egypt signs the 1979 peace treaty with Israel following the 1973 war, the current national emblem — the golden Eagle of Saladin, a symbol tracing back to the historic Arab liberation flag — is formally fixed to the flag's center in 1984, replacing the earlier hawk of Quraish design.
What it represents: the red-white-black horizontal tricolor, in continuous use in some form since the 1952 revolution, now carries the golden Eagle of Saladin, holding a scroll inscribed with the republic's name.