Warren Buffett has revealed that geopolitical tensions were a factor in Berkshire Hathaway's decision to sell most of its shares in Taiwanese company TSMC. The semiconductor manufacturer is viewed as a vital part of a "silicon shield" which could prompt the West to defend Taiwan against Chinese military aggression. Tensions between China and Taiwan have been high after Beijing conducted military exercises around the island in response to a visit by Taiwan's President to the US. Taiwan's Foreign Minister has said that the drills show China is preparing to launch a war against Taiwan.
