Negotiation efforts have come to a standstill as Iran pulls back from discussions with mediators. This decision coincides with an Israeli warning of potential strikes against Beirut amid ongoing confrontations with Hezbollah.

Iranian negotiators said Monday Israeli attacks in Lebanon violated the ongoing ceasefire.

TEHRAN -- Iran has halted message exchanges with the United States via mediation in protest against Israel's actions in Lebanon, Iran's semi-official Tasnim news agency reported…