Egypt imposed a blockade on the Red Sea coast of Israel by closing the Strait of Tiran, a critical maritime route. This strategic move was executed by President Gamal Abdel Nasser as part of a broader regional confrontational stance against Israel. The blockade was a direct challenge to Israeli maritime trade and a provocative escalation amid growing regional tensions. Nasser's actions were shaped by a combination of domestic political calculations and pan-Arab aspirations, particularly regarding the Palestinian cause. This blockade not only blocked commercial shipping but also threatened Israel’s vital access to international trade through its southern ports.

In the context of regional politics, the blockade represented a significant shift initiated by Arab nationalism, with Egypt positioning itself as a leader among Arab states. The closure sparked widespread reactions, both regionally and internationally. Israel viewed the blockade as an act of war, given that the Strait of Tiran was essential for Israeli access to the Red Sea and trade routes. In response to the blockade and escalating tensions, Israel began military preparations, leading to a rapidly growing conflict that would culminate in the Six-Day War shortly thereafter.

The blockade's timing was critical, as it coincided with exponential increases in military rhetoric and mobilization from both sides. By confronting Israel at the sea, Egypt not only aimed to challenge Israeli statehood but also sought to galvanize Arab support against a common adversary. The consequences of the blockade reinforced alliances among Arab nations while also solidifying Israel's resolve in enhancing its military capabilities in the face of perceived external threats.