You claim there is nobody in Israeli prisons who is not there for some offense. Until Israel stops throwing people into jail with no trial and no legal justification, there is no way we can know that. First have Israel renounce administrative detention and give everyone arrested the right to legal recourse - then we will listen to you.
Kremlin: Russian air strikes aimed at supporting Syrian army, target terrorists (Reuters)
from the article: Report: Norway may take some Palestinians freed for Shalit