DEIR AL-BALAH, Gaza Strip — Deadly airstrikes in Gaza on Wednesday cast more doubt on whether new U.S. efforts can advance a tenuous ceasefire in the Palestinian territory. Just two days after U.S. negotiators reportedly asked Israel to draw down attacks in the Gaza Strip , at least 10 people were killed Wednesday in two strikes, according to local hospitals and the Palestinian Red Crescent. Israeli troops also crossed the ceasefire line in southern Gaza and detained a Hamas police colonel at dawn Wednesday, two witnesses and a Hamas official said. Israel's military said one of the strikes on Wednesday, in the area of Nuseirat refugee camp, struck a Hamas commander who had participated in the Hamas-led attack in southern Israel on Oct. 7, 2023, in which 1,200 people, mostly civilians, were killed and 251 abducted. A second strike in the Tuffah area of Gaza City struck four Hamas militants gathering in a police station, the military said, claiming they were planning to carry out attacks against Israeli troops. Israel's military said a strike the day before targeted a meeting of four Ha