A deposit bonus is an offer that casino players get once they deposit funds on their player accounts. Casinos use deposit bonuses to attract players to their sites and encourage them to make deposits. The logic behind deposits bonuses is that an extra cash prize will encourage further deposits to the account.
Israel is known as the "only democracy in the Middle East", and is a strategic ally of the west. Gambling is strictly regulated and mostly illegal. Technically, online and mobile casinos are also prohibited, but in practice, playing in foreign casinos is possible, and players are not actively prosecuted. This makes mobile online gambling casinos relatively popular.