I am a Jewish Israeli.
My parents live in Eastern Europe.
So when I got drafted to the army, I got no security clearance, so I couldn't have access to any paper above "balmas". So for 2 years I served my country by carrying papers around.
You say I could have had access to secret documents? probably, but not easily.
You think I wouldn't betray my country? If the KGB told me to fetch some papers or my parents die - I would get them anything they ask for.
I am as high security risk as any Israeli Arab. A potential traitor, and the army knew it.

Still I was recruited and they aren't. Why? because Israel is a racist country.