Defense Briefing

French President Macron has officially declared that France will not participate in the US-Israeli Iran War – a direct rejection of the alliance. Simultaneously, Arab states are threatening to enter the war on the side of the US and Israel, while Iran names Russia as its supporter. The coalition situation is fragmenting further and significantly increases the risk of uncontrolled regional escalation.

The ceasefire between the US and Iran holds at 99% probability through the end of September according to Polymarket – however, the probability drops to 54% for October. With $2.4M volume, this is a highly liquid market with a clear signal: markets expect a critical threshold in early October. The Strait of Hormuz crisis and Iranian counterstrikes against Arab neighboring states remain escalation drivers.

NATO is demanding for the first time systematic coordination between military and civil society for national resilience – electricity, mobile communications, hospitals, and ports are being integrated into operational defense plans. The Copenhagen Summit on September 18-19 marked a qualitative leap: from declarations of intent to binding capability delivery plans. This represents a new escalation level compared to previous planning approaches and directly affects critical infrastructure security across all 32 member states.

Cyberattacks over the past week have manipulated physical control systems (PLCs/OT systems) at US water supply companies – a new quality compared to previous data thefts. The FBI, CISA, and NSA have issued an urgent joint warning for critical infrastructure. The shift from ransomware to physical sabotage marks a dangerous escalation level that shows direct parallels to attacks on European networks.

Ukrainian airborne forces launched a counteroffensive in February 2026 along the Vovcha River line toward the south, aimed at displacing Russian forces from Dnipropetrowsk Oblast. ISW data shows that Russia's spring-summer offensive has not achieved operational mobility, while Ukraine continues active attacks in the September timeframe. Polymarket sees a ceasefire by year-end at 70% – but the conflict remains militarily undecided.