I don't know how you drew your conclusions from Marwan's message, but it seems to me that you didn't read it right. Even if Marwan is arab, his messages clearly show the deep spite and animosity he has against radical arabs and islamists (like Assad and Ahmedinejad), and I often read him come to Israel's defense. In my opinion you should read him again.
15 police officers killed in Colombia helicopter crash (Reuters)
from the article: PM willing to start dialogue with Saudis, join regional summit