The military wing of the Palestinian Islamist Hamas movement, has again mounted an attack on the Kerem Shalom border crossing between Israel and the far south of the Gaza Strip – the fourth such attack since Sunday. Mortars were used in Friday’s attack, the al-Qassam Brigades said on the Telegram messaging service. Israel’s COGAT organization, which is responsible for coordination with Palestinian civil authorities, posted on the X messaging service: “Hamas just fired at the Kerem Shalom, the main humanitarian aid crossing into Gaza.” The attack was the fourth time this week that Hamas had act…