美国信用评级下调引发市场动荡，俄乌冲突与黄金市场联动

Group 1 - The recent negotiations between Russia and Ukraine in Istanbul ended without any ceasefire agreement, highlighting the increasing tensions and unrealistic demands from the Russian side [1][2] - Ukraine's President Zelensky is actively engaging in "telephone diplomacy" with Western leaders, urging for stricter sanctions against Moscow if Russia does not accept a proposed 30-day ceasefire [4][2] - The geopolitical tensions are driving investors towards safe-haven assets like gold, as evidenced by the simultaneous rise in gold prices and U.S. Treasury yields, indicating a shift towards hard assets amid concerns over dollar depreciation and debt risks [4][2] Group 2 - Current silver prices are experiencing volatility, with support levels identified around $31.80 and resistance at $32.45, indicating a potential trading strategy of long positions at support and short positions at resistance [7][4] - The U.S. dollar index is showing signs of a corrective rebound, with a key resistance level at 100.00, suggesting cautious trading strategies in the current market environment [7][4] - The overall market activity is decreasing, and investors are advised to approach trading with caution, particularly in light of the uncertainties in the international gold market [7]