The fighting escalated after heavy Israeli strikes killed 31 in southern Lebanon. BEIRUT: Hezbollah said its fighters clashed with Israeli forces beyond an Israeli-declared "yellow line" in south Lebanon on Wednesday (May 27) despite a ceasefire, a day after Israel said it was expanding ground operations . Israel this week vowed to intensify operations in Lebanon , a move that came ahead of talks on Friday between Lebanese and Israeli military delegations at the Pentagon and a new round of