最新，俄乌动向！

Group 1 - The core viewpoint of the article highlights the recent military cooperation agreement between Russia and Cuba, which is seen as a strategic move for Russia to strengthen its military presence in the Western Hemisphere [2] - The agreement was signed in March and has now been legally approved by Russian legislative bodies, providing a necessary legal framework for military collaboration [2] - This military cooperation is perceived as a return to traditional Soviet-era relations between Russia and Cuba, with implications for regional dynamics in Latin America [2] Group 2 - Ukrainian President Zelensky is expected to discuss the rationale for Ukraine's offensive against Russia during his upcoming visit to the White House [3][4] - Zelensky is advocating for European nations to purchase advanced "Tomahawk" missiles from the U.S., which may be transferred to Ukraine, alongside seeking additional "Patriot" defense systems [4] - Russian Foreign Minister Lavrov has warned that supplying "Tomahawk" missiles to Ukraine would severely damage U.S.-Russia relations and escalate tensions [5][6]