A phone call from Israeli Prime Minister Benjamin Netanyahu to US Vice President JD Vance during ceasefire negotiations in Islamabad has derailed what Iran viewed as a potential breakthrough in its long-standing standoff with the United States. The US delegation, led by Vance, reported that talks failed after Iran rejected Washington's final and best offer. Vance stated that the US could not secure Iranian agreement on key terms, despite extensive discussions. Following the breakdown, President Donald Trump attributed the failure to Iran's unwillingness to abandon its nuclear program. However, Iranian officials, including Foreign Minister Seyed Abbas Araghchi, claimed that Netanyahu's call redirected discussions towards Israeli interests, stalling progress. Unresolved disputes over Iran's nuclear activities, access to frozen assets, and security arrangements in the Strait of Hormuz contributed to the negotiations' failure. The breakdown has heightened tensions, with concerns of renewed military confrontation and rising global oil prices, which had previously surged above $119 a barrel before the ceasefire was announced. Analysts warn that oil prices may climb again if the ceasefire collapses, further complicating the geopolitical landscape.