Israeli military strikes across Gaza killed at least 22 people on Wednesday, Palestinian medics said, as the US stepped up efforts to overcome sticking points between Israel and Hamas to reach a ceasefire to end the war.One of the airstrikes killed at least 10 people in a multi-storey house in the Sheikh Radwan neighborhood of Gaza City on Wednesday, while another killed five in the nearby Zeitoun suburb, medics said.For the latest updates on the Israel-Palestine conflict, visit our dedicated page.In Deir Al-Balah city in central Gaza, where hundreds of thousands of Palestinians are sheltering, an Israeli airstrike killed three other people.In Jabalia, where the army has operated for more than three weeks, an Israeli airstrike killed four people, medics said.On Tuesday, Israeli military strikes killed at least 24 Palestinians across the Gaza Strip, medics said, with two airstrikes hitting tent encampments in Mawasi, to the west of the southern city of Khan Younis, killing 18 people.