What is the name of the new stealth fighter jet developed by South Korea?
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The prefixes in fighter jet names are often clues to their origin: KF (Korean Fighter), F (Fighter, USA), Su (Sukhoi, Russia), J (Jian/Fighter, China), Rafale (France), Tejas (India).
Step 1: Understand the context of indigenous military development.
Many countries are developing their own advanced military hardware, like fighter jets, to reduce reliance on foreign suppliers. South Korea's fighter jet program is a major national project.
Step 2: Identify the South Korean fighter jet.
The official name of the advanced fighter jet developed by South Korea is the KF-21 Boramae. The "KF" stands for "Korean Fighter," and "Boramae" means "young hawk" or "fighting hawk" in Korean.
Step 3: Differentiate it from other nations' jets.
The other options are stealth or advanced fighters from other countries:
\begin{itemize}
\item F-35 Lightning: Developed by the United States.
\item Sukhoi Su-57: Developed by Russia.
\item J-20 Mighty Dragon: Developed by China.
\end{itemize}
The KF-21 is South Korea's own contribution to this class of aircraft.