巩固战略支点、助伊朗增强军力，俄罗斯在中东打出组合拳

Group 1 - The core viewpoint of the articles highlights Russia's active role in the Middle East, particularly in strengthening its military influence through strategic partnerships with Syria and Iran [1][2][3] - Russia is reshaping its military presence in Syria by negotiating the retention of key military bases while withdrawing from certain strategic locations, allowing for a more concentrated military force [1][2] - The relationship between Russia and Syria is deepening, with Syria expressing gratitude for Russian support in stabilizing its internal situation amidst external challenges [2][4] Group 2 - Russia's military support to Iran includes the delivery of advanced weaponry, such as the Mi-28NE helicopters and a planned sale of 48 Su-35 fighter jets, which will enhance Iran's military capabilities [3][4] - The Su-35 fighter jets, despite having slightly weaker stealth capabilities, are comparable in firepower and operational range to Israel's current aircraft, potentially altering the balance of air power in the Middle East [4] - The ongoing military cooperation between Russia and Iran is seen as a response to U.S. pressure on Iran, reinforcing their strategic partnership [4]