Israel has warned on Sunday that its ceasefire agreement with Hezbollah could collapse if the Iran-backed group does not withdraw beyond the Litani River, one of the key stipulations of the truce.

Israel warned the country’s ceasefire with Hezbollah could collapse if the U.S.-designated terrorist group does not abide by the conditions of the deal.

Israel, with backing from the United States, is reportedly working to extend the 60-day ceasefire agreed with the Lebanese Hezbollah militia at the end of November, according to a media report. The move aims to prevent the ceasefire,

US envoy Amos Hochstein arrived in Beirut on Monday ahead of a meeting of the committee monitoring the ceasefire between Israel and Lebanon’s Hezbollah, which has entered its second month. The visit comes amid mounting tension and accusations of violations from both sides.