Several scientists have serious concerns about the vaccine, not just because of the lack of testing but because there were several reports claiming that scientists injected themselves with the prototype in order to boost development.
Meanwhile, Vice President Joe Biden has arrived in Poland to meet with the country's president and prime minister before discussing the crisis also with Estonia, Lithuania and Latvia.
Putin rejects Western criticism of Russian action in Ukraine, saying that there have been doubts about the legitimacy of Western action in Iraq, Afghanistan and Libya.