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\address{your name\\
your address\\
following of your address\\
end of your address}
\date{place and date} 

\begin{document}
\begin{letter}{Mr. Chad Ambassador\\
Chad Ambassy\\
address of this ambassy in your country
}
\opening{Dear Mr. Ambassador,}

On February 3rd., 2008, my colleague Ibni Oumar Mahamat Saleh, mathematics professor at N'Djamena university, and also spokesman of the opposition coalition CPDC, was abducted from his home in N'Djamena.\\

No news from him was available until September 3rd., 2008. On this day, the {\em Commission d'Enqu\^ete sur les \'ev\'enements survenus en R\'epublique du Tchad du 28 janvier au 8 f\'evrier 2008 et leurs cons\'equences}, releasing its Conclusions, reckons his death as nearly certain, and proves that the abduction was commited by the Chad National Army.\\

As numerous mathematicians, I wish to know, officially, the truth on my colleage's fate. So y sent a letter to the Chad President. Pleased find this letter enclosed in this mail.\\

\closing{Sincerely yours,}

\end{letter}
\end{document}
