Reuters: A separatist conflict in eastern Ukraine is revealing increasing evidence, but not yet conclusive legal proof, of Russian state involvement, senior United Nations human rights officials said on Monday.

“We are speaking about increasing inflow of (unofficial) fighters and increasing evidence that there are also some (Russian) servicemen involved in fighting,” Assistant Secretary-General for Human Rights Ivan Simonovic told a news conference in Geneva.

Russia denies Western accusations that it is backing pro-Russian rebels with arms and troops.