Mediator Qatar is “cautiously optimistic” after negotiations to reach a ceasefire in the Gaza war resumed in Doha on Tuesday, just as a top UN figure said Israel using hunger as a tactic in the conflict could constitute war crimes. Israel has been bombarding the Gaza Strip since October 7 when militants from the Palestinian movement Hamas, which controls the coastal territory, and other extremist groups killed over 1,200 people inside Israel and kidnapped some 240 people in an unprecedented terrorist attack. The Jewish state’s reaction and attempt to root out Hamas has killed more than 31,819 …