WASHINGTON/BEIRUT/JERUSALEM, Nov 26 (Reuters) - A ceasefire between Israel and Iran-backed group Hezbollah will take effect on Wednesday after both sides accepted an agreement brokered by the United States and France, U.S. President Joe Biden said on Tuesday. The accord cleared the way for an end to a conflict across the Israeli-Lebanese border that has killed thousands of people since it was ignited by the Gaza war last year.