Und

Coordinating conjunction

,  dies

Determiner

  ist

Auxiliary

  mein

Determiner

  dritter

Adjective

  Punkt

Noun

,  die

Determiner

  Tragödie

Noun

  im

  Libanon

Proper noun

  war

Auxiliary

  eine

Determiner

  schreckliche

Adjective

  Lehre

Noun

.

Finally, and this is my third point, the tragedy in Lebanon has been a terrible lesson.

Finally, and this is my third point, the tragedy in Lebanon has been a terrible lesson.