1. Berkshire Hathaway's record cash reserves reflect Buffett's geopolitical caution, hedging against China-Taiwan risks and preserving capital for future opportunities. 2. Berkshire shifts its portfolio, adding Domino's and Pool Corp., while reducing holdings in Apple, BAC, and others, maintaining nearly 30% in cash to balance overvaluation risks with stable liquidity. 3. Buffett's wisdom, shaped by macro insights and past crises, suggests holding cash to ensure resilience in case of market crashes amidst geopolitical tensions.