This despite a u.s. diplomatic boycott of the games. the u.s. olympic committee president saying the athletes should focus on, quote, what they do best, while letting the u.s. and chinese governments work to resolve their differences. one of those differences, nato expansion. this morning, chinese president xi jinping hosted russian leader vladimir putin. the two discussed several issues including russia s buildup of forces in and around ukraine. their opposition to any expansion of nato to see the two leaders together in lockstep it seems significant. quite stunning statement from the two as well. cnn correspondent david culver is in beijing with more. and, david, xi said putin s visit pull filled a promise the two made to each other years ago and that lengthy joint statement saying the friendship between the two states has no limits. clearly they re trying to send the world a message by this meeting. what more can you tell us about it? reporter: all the propaganda that surround