Israel's chief of staff Lieutenant General Eyal Zamir warned Monday that the country's military was likely to be fighting on multiple fronts throughout 2026, as it fights wars against Iran and Hezbollah.

Israeli Prime Minister Benjamin Netanyahu on Monday said rockets and drones possessed by Hezbollah remained a key threat that demanded further military action by Israel's military in Lebanon.

Israel and Hezbollah have traded blame over violations of the fragile 10-day ceasefire in Lebanon agreed earlier this month, which has since been extended, and attacks by both sides have continued.

U.S President Donald Trump met with his top security advisors Monday to discuss an Iranian proposal that would reportedly re-open the Strait of Hormuz as broader negotiations over the war continue, the White House said.

Russian President Vladimir Putin told Iran's top diplomat that Moscow would do everything it could to help secure peace in the Middle East, during a meeting in Saint Petersburg on Monday.

Iran's foreign minister on Monday said the Islamic republic was "stable, solid" during a meeting in Russia with President Vladimir Putin, according to Russian state TV.

Israeli Defense Minister Israel Katz warned Monday that Hezbollah's defiance would bring catastrophic consequences for Lebanon after the group's leader Naim Qassem rejected proposed direct talks between Lebanon and Israel.

The Israeli military on Monday said it had begun hitting Hezbollah positions in the Bekaa region, amid a ceasefire that began earlier this month.

"The IDF has begun to strike Hezbollah infrastructure sites in the Bekaa valley and in additional areas across southern Lebanon," it said in a brief statement on social media.

Hezbollah leader Sheikh Naim Qassem on Monday rejected Lebanon's planned direct talks with Israel, calling them a "grave sin" that will destabilize Lebanon, as he vowed to end the Israeli occupation of south Lebanon.

Qassem said Hezbollah will not give up its arms and people will return to their lands, vowing that Israeli troops will not remain on "a single inch of our occupied land".

Hezbollah has rejected Israeli Prime Minister Benjamin Netanyahu's accusation that it was jeopardizing a ceasefire and said it would keep responding to Israel's own violations and occupation of south Lebanon.

In a statement Sunday, Hezbollah said its attacks on Israeli targets in southern Lebanon and northern Israel were "a legitimate response to the enemy's persistent violations of the ceasefire since the first day of the announcement of the temporary truce".

Iranian Foreign Minister Abbas Araghchi on Monday blamed the United States for the failure of peace talks in Pakistan, after arriving in Russia for a meeting with President Vladimir Putin.

"The U.S. approaches caused the previous round of negotiations, despite progress, to fail to reach its goals because of the excessive demands," Araghchi was quoted as saying by Iranian state media.