GENEVA (AP) — With stern expressions and polite words before the cameras, President Joe Biden and Russia’s Vladimir Putin have plunged into hours of face-to-face talks at a lush lakeside Swiss mansion. It’s a highly anticipated summit at a time when both leaders say relations between their countries are at an all-time low. Biden called it a discussion between “two great powers” and said it was “always better to meet face to face.” Putin said he hoped the talks would be “productive.” The talks in a book-lined room had a somewhat awkward beginning — both men appeared to avoid looking directly at each other during a brief and chaotic photo opportunity before a scrum of jostling reporters.