The international environment of 2026 has forced governments to reconsider assumptions that seemed relatively comfortable only a few years ago. The continuing war in Ukraine, the U.S. operation in Venezuela, the war involving the United States, Israel, and the Iranian regime, severe disruption in the Strait of Hormuz, tensions across the Taiwan Strait, and renewed arguments over European defense have all changed how political leaders evaluate power, credibility, and risk. These events are interconnected not because they form part of a single conflict, but because every government watches what happens elsewhere and updates its expectations about what allies and adversaries are willing and able to do.