Original sentence: Other allegations, still disputed and very much unproven, include Russian involvement in Yushchenko's poisoning several weeks before the election, as well as alleged presence of Russian security forces sent to help Yanukovych to ascend to presidency
Edited sentence: Jane's Intelligence Digest has also reported presence of Russian security forces sent to help Yanukovych to ascend to presidency.Other allegation, still disputed and as yet unproven, include Russian involvement in Yushchenko's poisoning several weeks before the election