Group 1 - The article discusses Russia's successful test of the "Poseidon" underwater drone, which is capable of launching nuclear torpedoes and is considered a game-changer in global strategic balance [2][3][4] - President Putin emphasized that "Poseidon" has unique capabilities, including high speed and deep diving, making it difficult to intercept with current technology [3][4] - The "Poseidon" drone is powered by a compact nuclear reactor, allowing for near-unlimited range and the ability to operate autonomously for extended periods [5][6] Group 2 - The "Poseidon" is designed for two main strategic tasks: striking coastal targets and destroying aircraft carrier battle groups, potentially causing massive destruction and long-term radioactive contamination [5][6] - The U.S. response includes President Trump's directive to restart nuclear testing, highlighting concerns over Russia's advancements in nuclear capabilities [7][8] - Experts believe that the introduction of "Poseidon" and similar systems will significantly alter the effectiveness of existing missile defense systems, rendering them nearly obsolete [9][10] Group 3 - The U.S. Navy is also advancing its underwater capabilities with the development of the "Orca" unmanned underwater vehicle, which is expected to enhance its operational effectiveness [10][11] - The ongoing competition in underwater unmanned weaponry between the U.S. and Russia indicates a shift towards more automated and intelligent warfare technologies [11]