Hebrew media reported on Thursday that a phone call will take place this evening between US President Joe Biden and Israeli Prime Minister Benjamin Netanyahu.

This comes with the possibility of an escalation of the confrontation between Hezbollah and Israel after it assassinated the prominent leader of the party, Fouad Shukr.

Channel 12, a private Hebrew channel, said, "Biden will speak by phone with Netanyahu tonight."

It added that the expected call "comes against the backdrop of Hezbollah's threats to respond" to Shukr's assassination, without mentioning further details.

A short while ago, Hezbollah Secretary-General Hassan Nasrallah vowed a "real, not a formal, response" to Shukr's assassination, considering that the confrontation with Israel was no longer "support fronts, but a major, open battle."

Nasrallah said in a televised speech during Shukr's funeral: "The confrontation with Israel is no longer a support front, but rather a major open battle whose arenas are the Gaza Strip, southern Lebanon, Yemen, Iraq and Iran."

He added, threateningly: "The Israeli occupation and those behind it must await our inevitable response, and there will be no discussion or debate about that. The days, nights, and the field will be between us."

He continued: "We are looking for a real response, not a formal one as is being promoted. Rather, it is a very thoughtful response."

In turn, Netanyahu said, "Israel is at a very high level of readiness for any scenario, whether in defense or attack."

"We will impose a very heavy price for any aggressive action against us from any arena," he added during a conversation with the commanders of the Home Front Command in the army, according to what was reported by the Israeli army radio.

On Tuesday evening, Israel assassinated prominent Hezbollah leader Fouad Shukr in an airstrike on Beirut's southern suburbs.

Hamas and Iran announced the assassination of Hamas Political Bureau Chief Ismail Haniyeh on Wednesday morning, in an Israeli airstrike that targeted his residence in Tehran, the day after he participated in the inauguration ceremony of Iranian President Masoud Pezeshkian.

While Israel claimed responsibility for Shukr's assassination, it remained silent about Haniyeh's assassination, but its Prime Minister Benjamin Netanyahu hinted at Tel Aviv's responsibility for the latter's assassination.

Hamas and Iran have both vowed to respond to Haniyeh's assassination, and Hezbollah has also vowed to respond to Shukr's assassination, while international contacts and efforts to calm the situation continue, for fear of the conflict expanding in the region.