U.S. Secretary of State Marco Rubio said on Tuesday that a peace deal between Israel and Lebanon was “imminently achievable,” but accused Hezbollah of undermining efforts to reach a lasting agreement.

“By and large, I think a peace deal between Lebanon and Israel is imminently achievable, and should be,” Rubio told reporters during a White House briefing. “The problem with Israel and Lebanon is not Israel or Lebanon, it’s Hezbollah.”

Rubio argued that ongoing hostilities were largely driven by the Iran-backed group’s actions.

“The reason why Lebanon gets attacked by Israel is because Hezbollah is… launching rockets against Israelis,” he said.

Rubio said Washington was actively mediating between Jerusalem and Beirut, aiming to strengthen the Lebanese state and enable it to “begin to challenge Hezbollah in disarmament.”

“We’re going to do everything we can to make sure that both sides continue to talk so the progress can be made on some sort of permanent ceasefire that isn’t constantly spoiled by Hezbollah,” he added.

“What has to happen in Lebanon, what everybody wants to see, is that you have a Lebanese government with the capability to go after Hezbollah and take Hezbollah apart,” Rubio said.