Trade negotiations between the US and Canada collapsed on Friday, leading to the immediate imposition of 50% US tariffs on approximately $20 billion of Canadian goods. Canadian Prime Minister Mark Carney rejected the deal, citing last-minute US demands that were 'unfair' and 'uneconomic,' and announced Canada will retaliate with matching 'dollar-for-dollar' tariffs on US steel, dairy, appliances, and other products starting September 8. The breakdown marks a significant escalation in the trade war between the two allies, threatens the future of the USMCA free trade agreement, and has drawn criticism from US business groups and Democratic lawmakers.

US Treasury Secretary Scott Bessent is taking action to address pressures from bond vigilantes in the $32 trillion Treasury market, signaling a significant development in US fiscal policy and market dynamics. The move comes amid concerns over fiscal sustainability and investor demands, with potential implications for global financial markets.

Iran's Supreme National Security Council Secretary Mohsen Rezaei warned neighboring countries against joining the US economic campaign against Tehran, stating they would be considered enemies and their interests targeted. The warning follows US President Trump's announcement of the 'most crushing economic operation' against Iran, with Treasury Secretary Scott Bessent expected to detail the measures on Monday. The UAE has suspended trade with Iran, while China criticized the sanctions approach. Rezaei threatened to block oil exports through the Strait of Hormuz and target alternative routes if Gulf states participate in US economic warfare.

The United States Postal Service has published a final rule implementing President Trump's March executive order to restrict mail-in voting, despite two federal court injunctions blocking the changes. The rule requires states to provide voter lists and adopt barcoded ballot envelopes, or risk refusal of ballot deliveries. Critics argue it is an unconstitutional federal overreach into election administration, with midterm elections approaching. The administration defends the policy as ensuring election security, while voting rights groups warn of disenfranchisement.

The U.S. Navy has awarded Zone 5 Technologies, a Kongsberg company, a contract to produce its combat-proven Rusty Dagger low-cost cruise missile for the new Coalition Heterogeneous Affordable Offensive Strike (CHAOS) program. Announced August 21, this is the second contract under CHAOS, which aims to deliver modular, surface-launched cruise missiles to U.S. and allied partners. Rusty Dagger, already in production for Ukraine and battle-tested in Russian airspace, offers a production-ready, affordable maritime strike capability, addressing capability gaps and supply chain challenges. The program also supports coalition missile capabilities through Foreign Military Sales cases.