Pakistan, Aug. 10 -- Russia cautiously welcomed a US-mediated peace agreement between Armenia and Azerbaijan, signed in Washington to end their decades-long conflict, yet expressed reservations over a proposed new transit corridor. The deal calls for creating a route through Armenia to connect Azerbaijan with its Nakhchivan exclave, granting the United States development rights for what has been labeled the "Trump Route for International Peace and Prosperity" in the resource-rich South Caucasus. However, Moscow indicated it would further analyze the corridor's implications before giving full support, noting existing trilateral agreements remain in force.

In stark opposition, Iran, a close regional partner of Russia and neighbor to both A...