
Formulate an answer to this elaborate question: Which song from the "This is War" was written by the band member of Thirty Seconds to Mars, who also appeared in various film roles such as "Panic Room" (2002), "Alexander" (2004), "Lord of War" (2005), "Lonely Hearts" (2006), "Chapter 27" (2007), and "Mr. Nobody" (2009)?


Jared Leto
