Overview

• The three-day Joint Sea-2025 exercises began on August 3 in waters off Vladivostok and will conclude on August 5.
• Participating forces include four Chinese warships—among them guided-missile destroyers Shaoxing and Urumqi—alongside Russian Pacific Fleet vessels and submarines.
• Training activities encompass submarine rescue, anti-submarine warfare, air defence, anti-missile engagements, live-fire artillery and maritime combat scenarios.
• President Trump ordered two U.S. nuclear submarines to reposition in response to Russia’s nuclear rhetoric, highlighting rising tensions between Washington and Moscow.
• After the drills wrap up, both navies will conduct joint patrols in key Pacific waters, a move that Japan’s defence ministry has warned poses serious regional security concerns.