Have US-Iran talks failed?

Tensions between the United States and Iran have reached a critical juncture, with a fragile ceasefire in place. Hopes for talks in Islamabad dissipated after President Donald Trump canceled his envoys' visit, citing excessive Iranian demands regarding its nuclear program. Iranian Foreign Minister Abbas Araghchi blamed the US for the failure of the talks, while Trump stated that Iran could reach out if it wanted to negotiate an end to the war.