降息！5国，集体宣布！

Group 1 - The core viewpoint of the article is the onset of a global "rate cut wave" following the Federal Reserve's decision to lower interest rates by 25 basis points, with several central banks in the Middle East and Canada following suit [1][2][3][4][5][6]. - The Federal Reserve's future monetary policy path is characterized by significant uncertainty, as indicated by Chairman Powell's remarks about internal disagreements among officials regarding potential actions in December [1][9][10]. - The probability of a 25 basis point rate cut by the Federal Reserve in December has decreased to 67.8%, down from 95.3% prior to Powell's statements [1][9]. Group 2 - The Central Bank of Canada has also cut its policy rate by 25 basis points to 2.25%, marking the second consecutive meeting with a rate cut, as the Canadian economy faced a contraction of 1.6% in the second quarter [6][7]. - The Canadian central bank's officials noted that the economy is undergoing a difficult transition due to structural damage from trade conflicts, which has limited the effectiveness of monetary policy [7]. - The European Central Bank is expected to maintain its key interest rate at 2%, while the Bank of Japan's expectations for a rate hike have diminished significantly due to political pressures [8].