Billionaire investing icon Warren Buffett said on Tuesday there are dozens of countries in which his sprawling Berkshire Hathaway Inc (BRKa.N) conglomerate would be interested in buying new businesses. Berkshire earlier this year agreed to acquire a German motorcycle apparel and accessories retailer – a purchase that Buffett described as an advertisement to markets that he is shopping abroad. It was an ad that paid us,” said Buffett, 85, who over the past five decades has built Berkshire Hathaway into one of the world’s most valuable companies.