sam cass, who is the director of the let's move campaign and nutrition policy senior adviser and alsokevin concannon are among the key speakers. we'll hear from them after this conference gets under way shortly. from the associated press today, vice president biden has a blunt message for russia about its activities in ukraine. vice president biden says it's tomb for russia to stop talking and start acting to reduce tension. he also announced the united states will provide an additional $50 billion to help the government with political and economic reforms. the vice president is in kiev meeting with officials and leaders. state department spokesman said yesterday there are indications that syria used a chemical weapon again. she described it as a toxic industrial chemical, possibly chlorine. she wouldn't say whether assad has crossed the red line again, but that investigations are in the preliminary stages. here is more on what she had to say about that. >> i don't know if you had seen the reports on use of chemical weapons in syria in the few days. >> i have seen those reports. >> an