US vows toughest sanctions on Iran, warns allies to join coalition or face consequences

The United States has pledged to implement what it describes as the most stringent sanctions in history against Iran, with Treasury Secretary Scott Bessent threatening to "squash" the Iranian economy. These statements, made around August 20-21, 2026, follow President Donald Trump's earlier warning of "Economic Warfare" and "Economic D-Day" against Tehran. The administration's stated goal is to achieve the collapse of the Iranian regime through this intensified economic pressure.

Secretary Bessent has urged international allies to join a united front, cautioning that any nation or entity providing a "lifeline" to Iran will face severe economic repercussions. The strategy is described as a "one-two punch," combining a naval blockade already in place with these new, unprecedented sanctions. While no specific details of the sanctions were immediately released, Bessent indicated a press conference would be held to outline the measures.