Israeli pop star Kobi Peretz began his 18-month sentence Sunday for tax evasion after he was convicted last March of concealing NIS 5.2 million [$1.5 million] in income as well as evading 830,000 NIS [$230,500] in taxes. According to Behadrei Haredim, Peretz is housed in the special wing of Ramle’s Ma’asiyahu prison that is reserved for…