Ukraine is likely to launch some kind of revanchist offensive ahead of March 2019 presidential elections. The apparent danger facing the two self-declared Donbass republics is comparable to that faced by Abkhazia and South Ossetia when Georgian President Mikheil Saakashvili attacked them.
We are accused of something, and with a high degree of probability (“highly likely”), as they say; we did this or that, intervened here, did something there. At the same time, no one considers it necessary to provide any evidence.
RIA Novosti states that, for example, Russia has repeatedly denied accusations of trying to influence elections in different countries.
The expression "highly likely" may refer to Theresa May's statement following Skripal poisoning. The Prime Minister of the UK said in March 2018 that it is ‘highly likely’ that Moscow ordered the poisoning of former spy Sergei Skripal using a type of military-grade nerve agent developed in Russia.
Russia is also accused of being responsible for the 2014 downing of MH17, provoking a war in Ukraine and of illegal annexation of Crimea. And recently the Dutch security services expelled Russian spies over plot targeting OPCW.