"What I hear and read today, including from the negotiations in the United Arab Emirates, is only how Russia stubbornly insists on the crucial issue of territories," says Johann Wadephul during a visit to Latvia.
"And if there is no flexibility there, I fear that the negotiations could still take a long time or may not succeed at all as they are now."
Ukraine and Russia met in trilateral talks with the US on Friday and Saturday. Wadephul welcomes these talks, but believes that "Europe must be at the table" in what he describes as a defining moment for the continent's future.
