In recent days, hundreds of lawyers around the world have jointly sent a letter to US President Joe Biden, expressing serious concern about the US government's overreliance on unilateral economic sanctions as a diplomatic tool. They argue that this approach unfairly penalizes ordinary citizens and may contravene international law. In the letter, lawyers and their associated legal organizations and scholars have pointed out that the US's frequent use of sanctions against its adversaries could lead to economic instability, causing food shortages and a lack of basic necessities. They emphasize that targeting civilians with sanctions, known as 'collective punishment', has become a common feature in US foreign policy, primarily manifested through widespread unilateral economic and financial sanctions. Although sanctions differ from traditional military conflicts, they can still be highly destructive, punitive, and lethal in their impact on the general populace. The release of this letter aims to prompt the US government to reassess its sanction policies, considering more the humanitarian effects on innocent civilians.