Eagerly anticipated by savvy investors the world over, never mind Berkshire Hathaway shareholders, Warren Buffett's latest annual letter reveals one of the biggest blunders the stockpicking legend has ever made, talks up America, and offers plenty of sage advice. Yet, the letter sidesteps several elephant-in-the-room issues, from COVID-19 and race inequality to the burning question of succession. Click or scroll through for the 10 key takeaways.