Israel launched airstrikes on southern Beirut's Dahiyeh district on Sunday, which Prime Prime Minister Benjamin Netanyahu stated was a direct retaliation for Hezbollah firing projectiles into northern Israel. The Israeli military reported that Hezbollah launched three projectiles, characterizing it as a clear violation of the ceasefire.

This military action has heightened concerns about its potential to disrupt ongoing peace negotiations between the United States and Iran, with the outcome of these talks being closely monitored by international stakeholders. The situation in Lebanon has been identified as a critical component of the broader peace agreement.

Lebanese state media reported that the airstrikes hit the Ghobeiry neighborhood, resulting in at least two fatalities and four injuries, according to the Lebanese National News Agency. The Israeli Prime Minister's office confirmed the strikes targeted "terrorist targets belonging to the Hezbollah terrorist organisation."

The escalation in Lebanon poses a significant risk to the US-Iran memorandum of understanding, which was anticipated to be finalized soon. U.S. President Donald Trump had indicated the deal would be agreed upon on Sunday, a sentiment echoed by Pakistani Prime Minister Shehbaz Sharif, who suggested completion within 24 hours. However, Iran's Ministry of Foreign Affairs spokesman, Esmaeil Baghaei, stated that while a deal was close, it would not be signed on Sunday.

Iran has previously designated attacks on southern Beirut as a "red line." A prior Israeli strike on the same area a week ago prompted Iran to launch missiles at Israel, leading to a tense phone call between President Trump and Prime Minister Netanyahu, who was urged to exercise restraint. The current situation could prove to be a substantial setback for Iran's objectives in the negotiations.

Al Jazeera correspondent Almigdad Alruhaid, reporting from Tehran, noted that an official response from Iran was pending but that the development was viewed as serious. He explained that the situation in Lebanon is considered an "integral and central part" of the peace deal. The broader ceasefire established on April 8th was explicitly linked to the situation in Lebanon, and Iranian officials have consistently maintained that the two issues are inseparable.

This latest exchange of fire and subsequent Israeli military response underscores the volatile nature of the region and the complex interplay between local conflicts and international diplomatic efforts. The implications for the US-Iran talks, and by extension regional stability, remain a significant concern.

Further details regarding any official Iranian response or immediate impact on the US-Iran negotiations are awaited, as the region braces for potential further repercussions from this latest flare-up.