US-Iran Conflict: Iran Condemns Impending US 'Economic D-Day' Sanctions as Violation of Sovereignty

As the conflict between the United States and Iran approaches its sixth month, the Trump administration is preparing to launch an unprecedented economic offensive, termed 'Economic D-Day,' to force Tehran to capitulate. In response, Iranian officials have fiercely condemned the impending secondary sanctions, with Foreign Ministry spokesperson Esmaeil Baghaei labeling them an unlawful assertion of extraterritorial sovereignty that violates the UN Charter. Tehran has warned that any nation complying with these economic restrictions will be treated as an enemy committing an 'act of war.' Meanwhile, the economic toll on Iran continues to mount as the rial plunged to a record low of 2.02 million per US dollar, and a US naval blockade has virtually halted commercial shipping through the strategic Strait of Hormuz. Amid these tensions, regional security dynamics are shifting, evidenced by the cancellation of joint US-South Korea military drills and the relocation of Greek Patriot missile systems to Crete.

// Background

The active conflict between the US, Israel, and Iran began on February 28, 2026. A temporary Memorandum of Understanding (MoU) signed in June 2026 established a 60-day window to negotiate a broader peace deal and nuclear accord, but the deadline expired without an agreement, leading both sides to declare the deal dead. The US has since maintained a naval blockade, severely choking traffic through the strategic Strait of Hormuz.

// Key Developments

• US Treasury Secretary Scott Bessent is scheduled to unveil a massive new sanctions package, described as the single greatest financial offensive ever marshalled against an adversary.
• Iran's Foreign Ministry spokesperson Esmaeil Baghaei argued that secondary sanctions violate Article 2(1) of the UN Charter and the customary prohibition on intervention.
• Mohsen Rezai, head of Iran's Supreme National Security Council, declared that Tehran will view any country's support for the new US economic measures as an 'act of war.'
• The Iranian rial hit an all-time low of 2.02 million to the US dollar on informal markets ahead of the official sanctions announcement.
• The US Navy's ongoing blockade has severely restricted traffic in the Strait of Hormuz, though Iran has granted special passage to Iraqi oil tankers.
• The US military canceled the joint Ssang Yong amphibious landing exercise with South Korea due to force deployment constraints in the Middle East.