Abu Dhabi: Amid a fourth round of US-mediated direct talks between Israeli and Lebanese officials in Washington, intense cross-border hostilities persisted on Tuesday, highlighting the deep-seated challenges facing diplomatic initiatives to halt the months-lon... Abu Dhabi: Amid a fourth round of US-mediated direct talks between Israeli and Lebanese officials in Washington, intense cross-border hostilities persisted on Tuesday, highlighting the deep-seated challenges facing diplomatic initiatives to halt the months-long regional escalation.Concurrently, international observers are monitoring how the broader conflict intersects with regional nuclear security. According to Al Jazeera, International Atomic Energy Agency (IAEA) chief Rafael Grossi revealed during a visit to the United Arab Emirates that several previously active nuclear initiatives in Iran have now ceased, noting that the ongoing conflict and the targeting of Tehran's assets have fundamentally shifted intelligence assessments regarding Iran's nuclear trajectory.Also read: Rubio grilled on Iran, says US won't swap sanctions relief for straitAgainst the backdrop of these changing regional dynamics, delegates from Lebanon and Israel gathered at the US State Department for direct negotiations. Addressing the situation before a US Senate Foreign Relations Committee hearing, US Secretary of State Marco Rubio expressed confidence that a rapid bilateral solution is achievable. Rubio told the panel that Israel and Lebanon can do a peace deal tomorrow, while maintaining that Israel has no territorial claims in Lebanon. Hezbollah is the impediment. The continued violence on the ground follows an announcement by US President Donald Trump regarding a brokered understanding between the warring factions. According to details provided by the Lebanese embassy in Washington, the proposed framework would initially restrict Israeli operations against Beirut and halt Hezbollah strikes on Israeli soil before potentially expanding to other regions.The immediate need for this diplomatic framework stems from how the active hostilities originally erupted. The conflict began after Hezbollah initiated operations against Israel on March 2, asserting it was acting in alignment with Iran, which subsequently pulled Lebanon into a broader regional confrontation.Thus far, however, neither Israel nor Hezbollah has formally accepted the terms presented by the US President.Also read: Iran war: Hostilities flare again, talks at a stalemateDespite this lack of formal endorsement and intense domestic resistance from Hezbollah, Lebanese Prime Minister Nawaf Salam defended the continuation of the Washington dialogue, describing the ongoing diplomatic engagement as the least costly choice for Lebanon .While Lebanon seeks a bilateral path forward, Washington is attempting to isolate the conflict from wider regional disputes. Secretary Rubio emphasised that Washington intends to keep the Israel-Lebanon negotiations entirely ring-fenced from parallel diplomatic engagements involving Iran.Tehran, however, has consistently linked the two conflict zones. The Iranian government has cautioned that Israel's intensified ground campaign in Lebanon could completely unravel the active US-Iran ceasefire that has been maintained since April 8.This warning comes as the military confrontation has reached unprecedented severity on the ground. Israeli ground forces have been pushing their deepest offensive into Lebanese territory in nearly two decades.Citing what he termed as Hezbollah's repeated violations of a nominal ceasefire that had been technically active since April