Trump finally stopped pretending; the war has escalated from remote strikes to ground combat, and the duration is expected to be extended by another 3-4 weeks. Previously, he repeatedly talked about【peace talks】or【imminent end of the war】, which now seem like a joke. Will there be a sharp drop at the opening on Monday?

I think the probability is quite high. Because think about it, if the fighting continues for another month, and the crypto market and US stocks fall for another month, wouldn't retail investors sell early for a better price and still sell at a high point? So the escalation of the war is very likely to change some investors' previous opinions, and Monday's opening is theoretically not optimistic.
However, Trump remains a variable. Remember what Trump did when the war started on Monday the 9th? He was just talking nonsense! He said the war would end soon, causing oil prices to plummet from 118 directly to 80, and the crypto market and US stocks to surge. So I have no reason to be bullish on Monday, only to be prepared to guard against a possible Trump Gank.