Palestinian offensive caused $ 1.9 billion in economic destruction in Shabana , official says . It could take a year for Gaza 's economy to recover , Palestinian agency says . CNN official : 1,300 children among 159 people killed in Gaza during offensive .
Israeli offensive caused $ 1.9 billion in economic destruction in Gaza , official says . It could take a year for Gaza 's economy to recover , Palestinian agency says . U.N. official : 159 children among 1,300 people killed in Gaza during offensive .