The Israeli military said on Sunday it struck about 250 militant targets across the Gaza Strip in the last 24 hours, including attacks on weapons depots, tunnel shafts and other sites, as UN agencies warned of mounting pressure on hospitals in the south. Scores more Palestinians were killed in Israeli strikes, including at least 31 people who died when a bomb destroyed a residential building in northern Gaza on Sunday, according to medics. A search was under way in the crowded Jabalia refugee camp for people trapped under the rubble of the multi-storey building. The Hamas-controlled Health Min…