UNICEF Executive Director Catherine Russell said on Sunday over 13,000 children have been killed in Gaza in Israel’s offensive, adding many kids were suffering from severe malnutrition and did not “even have the energy to cry,” in an interview with CBS News. When asked if Russell was referring to the agency’s own estimate or was basing the figure on reporting from authorities in Gaza, a UNICEF spokesperson pointed to a press statement by the UN children’s agency that attributed the figure to Gaza’s health ministry. Israel has waged a deadly war in the enclave, killing close to 32,000 people, m…