Might seem far-fetched, but IDF might see this as a golden opportunity to bomb North Gaza and straight up annex it. That would perfectly slot into their plan to push Palestinians to the sea.
At this time, now that Hamas has escalated the fight and achieved better results than they could have dreamed of, Hamas would have no choice but to continue fighting. Either you die fightiing or die as a result of IDF bombardment. Its quite clear, why IDF are bombing North Gaza. It's a precursor for a land invasion.
From a geopolitics perspective, the Russians might not be idle onlookers in this war. It might help their cause to keep the Americans and NATO busy in the Middle East and attention away from the Ukraine war. Arming Hezbollah in Lebanon, Syria and Iran would help the Russian cause.