An isolated Europe worries the US will negotiate on Ukraine badly without it

The future of Ukraine will be discussed this week in Riyadh between Americans and Russians, with neither Europeans, nor, at the time of writing, Ukrainians themselves at the table. The question for European leaders now is: what can any of them do about it?

​ The future of Ukraine will be discussed this week in Riyadh between Americans and Russians, with neither Europeans, nor, at the time of writing, Ukrainians themselves at the table. The question for European leaders now is: what can any of them do about it? Read More Breaking News, Latest News and Videos | CNN