Fears of a regional war rose Thursday after Lebanon's powerful Hezbollah movement said none of Israel would be spared in a full-blown conflict, and Israel said it had approved plans for a Lebanon offensive.

Experts are divided on the prospect of wider war, almost nine months into Israel's vow to eradicate Hamas, the Palestinian militant group in the Gaza Strip.

An escalating cross-border tit-for-tat between Israel and Hezbollah raised fears Wednesday of a full-blown war, but experts are divided on the prospect of a wider conflict.

The United States was working behind the scenes to ease tensions, a day after Israel's top diplomat warned the Iran-backed Hezbollah that it would be destroyed in the event of a "total war" and the Israeli army said its operational plans for an offensive in Lebanon had been signed off.

Israeli Prime Minister Benjamin Netanyahu disbanded his war Cabinet Monday, a move that consolidates his influence over the Israel-Hamas war and likely diminishes the odds of a cease-fire in the Gaza Strip anytime soon.

Netanyahu announced the step days after his chief political rival, Benny Gantz, withdrew from the three-member war Cabinet. Gantz, a retired general and member of parliament, was widely seen as a more moderate voice.

The U.S. Navy prepared for decades to potentially fight the Soviet Union, then later Russia and China, on the world's waterways. But instead of a global power, the Navy finds itself locked in combat with a shadowy, Iran-backed rebel group based in Yemen.

The U.S.-led campaign against the Houthi rebels, overshadowed by the Israel-Hamas war in the Gaza Strip, has turned into the most intense running sea battle the Navy has faced since World War II, its leaders and experts told The Associated Press.

The latest proposal for a cease-fire in Gaza has the support of the United States and most of the international community, but Hamas has not fully embraced it, and neither, it seems, has Israel.

Hamas this week accepted the broad outline but requested "amendments." Prime Minister Benjamin Netanyahu has publicly disputed aspects of the plan, raising questions about Israel's commitment to what the U.S. says is an Israeli proposal.

Britain-based Middle East specialist Amal Saad on Wednesday played down the prospect of wider escalation between Hezbollah and Israel following the latter’s assassination of a senior Hezbollah commander in south Lebanon a day earlier.

"I don't think that the death of this highest-ranking commander is going to change any of Hezbollah's calculations," Saad said, explaining that civilian casualties were "red lines" for the group rather than the targeting of commanders or fighters.

For more than a decade, a steady flow of Syrians have crossed the border from their war-torn country into Lebanon. But anti-refugee sentiment is rising there, and in the past two months, hundreds of Syrian refugees have gone the other way.

They're taking a smugglers' route home across remote mountainous terrain, on motorcycle or on foot, then traveling by car on a risky drive through government-held territory into opposition-held northwestern Syria, avoiding checkpoints or bribing their way through.

The resignation of a senior member of Israel's war Cabinet was a dramatic show of distrust in Prime Minister Benjamin Netanyahu and his strategy for the eight-month-old war with Hamas.

But the departure of Benny Gantz does not immediately appear to threaten Netanyahu, who still controls a majority coalition in parliament.

Israeli leaders have increased their warnings to Hezbollah as cross-border violence escalates by the day, but experts believe that the risk of all-out war remains limited.

The Progressive Socialist Party kicked off this week a series of meetings with the Lebanese political parties in a bid to break a knotty presidential impasse, few days after French special envoy to Lebanon, Jean-Yves Le Drian, left Beirut empty-handed.

In Maarab, a PSP delegation met with Lebanese Forces leader Samir Geagea and MPs Ghassan Hasbani and Nazih Matta, while Former minister Ghazi Aridi held meetings with Speaker Nabih Berri and Hussein Khalil, the political aide of Hezbollah chief Sayyed Hassan Nasrallah.