刚后退一步，不到24小时，特朗普报复来了，呼吁立即逮捕奥巴马

Group 1 - The expiration of the New START treaty between the US and Russia is imminent, which could lead to a new nuclear arms race as both countries possess over 90% of the world's nuclear weapons [3][4] - Former President Obama expressed concerns that the failure to act could undermine decades of diplomatic efforts and destabilize global security [3] - The recent one-week ceasefire in Ukraine, facilitated by Trump, ended with Russia resuming attacks on Ukrainian energy facilities, raising questions about the effectiveness of such agreements [4][6] Group 2 - The nomination of the Federal Reserve Chair has become a contentious issue, with Democrats and Republicans in fierce opposition, impacting US monetary policy and potentially global financial markets [9][11] - Trump's nominee, Walsh, has faced backlash from Democrats who argue that his nomination threatens the independence of the Federal Reserve [9][11] - Ongoing investigations into Federal Reserve officials could further complicate the nomination process, with implications for the stability of US monetary policy [9][13]