London's benchmark FTSE 100 fell more than 3 percent in early trading, with banking, travel and industrial stocks leading declines as investors moved to reduce risk exposure. The broader FTSE 250 index also dropped markedly, reflecting widespread selling pressure across sectors.

Paris stocks fell sharply on Tuesday, extending losses from the previous session, amid heightened geopolitical tensions in the Middle East.

Germany's benchmark DAX index plunged by about 4 percent on Tuesday amid heightened geopolitical tensions in the Middle East.

Hong Kong's stock market tumbled on Tuesday with the benchmark Hang Seng Index down 1.12 percent to close at 25,768.08 points.The Hang Seng China Enterprises Index lost 1.07 percent to end at 8,608.71 points, and the Hang Seng Tech Index plunged 2.26 percent to 4,876.53 points.

Japan's benchmark Nikkei stock index ended down over 3 percent on Tuesday, weighed down by concerns over the current conflict in the Middle East and surging oil prices.

The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, lost 2.57 percent to close at 3,209.48 points Tuesday.The ChiNext Index, together with the Shenzhen Component Index and other indices, reflects the performance of stocks listed on the Shenzhen Stock Exchange.

Chinese stocks closed lower on Tuesday, with the benchmark Shanghai Composite Index down 1.43 percent to 4,122.68 points. The Shenzhen Component Index closed 3.07 percent lower at 14,022.39 points.

The STAR Composite Index, which reflects the performance of stocks on China's sci-tech innovation board, opened 0.15 percent higher at 1,830.3 points on Tuesday. The STAR 50 Index, which tracks the 50 largest stocks listed on the board that also meet certain liquidity requirements, opened 0.2

Chinese stocks opened higher on Tuesday, with the benchmark Shanghai Composite Index up 0.16 percent to open at 4,189.41 points.The Shenzhen Component Index opened 0.23 percent higher at 14,498.7 points.

Tokyo stocks ended lower on Monday, with the benchmark Nikkei index plunging over 2 percent at one point, following the weekend launch of a joint military strike by the United States and Israel on Iran.

Hong Kong's stock market ended lower Monday with the benchmark Hang Seng Index down 2.14 percent to close at 26,059.85 points.The Hang Seng China Enterprises Index fell 1.78 percent to end at 8,701.91 points, and the Hang Seng Tech Index fell 2.89 percent to end at 4,989.37 points.

The STAR Composite Index, which reflects the performance of stocks on China's sci-tech innovation board, closed 1.2 percent lower at 1,827.54 points on Monday.

The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, lost 0.49 percent to close at 3,294.16 points Monday.

Chinese stocks closed mixed on Monday, with the benchmark Shanghai Composite Index up 0.47 percent to 4,182.59 points.

Hong Kong's Hang Seng Index fell 324.96 points, or 1.22 percent, to open at 26,305.58 points on Monday.

The STAR Composite Index, which reflects the performance of stocks on China's sci-tech innovation board, opened 1.69 percent lower at 1,818.59 points on Monday.

The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, was down 1.61 percent to open at 3,257.05 points Monday.

Chinese stocks opened lower on Monday, with the benchmark Shanghai Composite Index down 0.27 percent to open at 4,151.8 points.

Hong Kong's stock market ended higher on Friday with the benchmark Hang Seng Index up 0.95 percent to close at 26,630.54 points.

U.S. stocks ended mixed on Thursday, snapping a two-day rally, as shares of artificial intelligence (AI) chip giant Nvidia fell despite reporting strong quarterly results.The Dow Jones Industrial Average rose 0.03 percent to 49,499.2. The S&P 500 sank 0.54 percent to 6,908.86. The Nasdaq Composite