Escalating violence between Israel and Hezbollah in Lebanon is raising concerns of a broader conflict in the Middle East, with U.S. efforts to mediate a ceasefire in Gaza facing little to no progress.Overnight, Israel launched airstrikes in southern Lebanon, targeting what officials say were Hezbollah terrorists. The strikes come in response to over 100 rockets fired by Hezbollah over the weekend, following the death of one of its leaders and an attack through communications devices.One Hezbollah leader declared the attacks an "open-ended battle" as both sides spiral closer to an all-out war."We did not want this war. We are not seeking war," Israeli President Isaac Herzog said. "Hezbollah's been attacking us on a daily basis, demolishing Israeli villages and towns. Basically leading to the eviction of 100,000 Israelis from their homes. Life has been shattered in our northern border.""We will take whatever action is necessary to restore security and to bring our people safe back to their homes," Prime Minister Benjamin Netanyahu said in a televised address. "No country can accept the wanton rocketing of its cities. We can't accept it either."Meanwhile, U.S. mediators have been working alongside international negotiators to secure a ceasefire deal in Gaza, but stalled progress and the escalating violence are threatening hope of bringing American hostages home."We have not achieved any progress here in the last week to two weeks- not for lack of trying," White House National Security Spokesperson John Kirby, said. "We will certainly keep up those conversations as best we can. And we're talking to both sides here."President Joe Biden acknowledged the latest surge of violence and expressed concern of spreading conflict."We're going to do everything we can to keep from a wider war from breaking out," he said.There are other concerns that the same type of attacks on explosive communications devices used in Lebanon could happen in the U.S. Experts believe Israel infiltrated the international supply chain and placed the rigged devices in imports headed to Lebanon. According to the Associated Press, the complex operation likely took months to pull off but little evidence has emerged so far.The White House did not comment on whether it is taking steps to protect the U.S. supply chain as a result, offering instead that Biden wants the supply chain to be largely self-sufficient, with most goods originating from within the U.S.Biden and Vice President Kamala Harris are scheduled to meet with leaders of the United Arab Emirates Monday before Biden travels to New York for the United Nations General Assembly.