BEIRUT/JERUSALEM, Oct 11 (Reuters) - Two U.N. peacekeepers were injured by an Israeli attack near a watchtower in southern Lebanon on Friday, according to Israel's military, as explosions once again rocked the peacekeepers' primary base in the area within a 48-hour period during an ongoing clash between Israeli forces and Hezbollah. U.N. Secretary-General Antonio Guterres, along with Western nations, denounced the assault. The U.N. peacekeeping mission, UNIFIL, referred to the