DEIR AL-BALAH, Gaza Strip — Israeli strikes in the Gaza Strip killed at least 18 people overnight, including six women and four children, health officials said Tuesday, as Israel and Hamas appeared to be narrowing in on a ceasefire deal to end the 15-month war and release dozens of hostages. Officials have expressed mounting optimism that they can conclude an agreement in the coming days after more than a year of talks that have repeatedly stalled. [time-brightcove not-tgx=”true”] Yemen’s Iran-backed Houthi rebels meanwhile fired a missile at central Israel, setting off sirens and sending people fleeing to shelters without causing any casualties.