He's been trained - ineffectively - to tame these affectations. They continuously return and his speaking is effected with pauses. In English it would sound like "umm" and "uhh". He's making a conscious effort to stifle his tells. The speech is heavily rehearsed to aid the stifling of the affectations.
@GeorgeG Viktor Bout "Russia's "merchant of death" offered Donald Trump asylum in Russia this week, saying he believes the former president's life is in danger if he remains in the United States.
In an interview on a Russian state-TV channel, Viktor Bout—an international arms dealer made infamous after his portrayal by Nicolas Cage in the 2005 film "Lord of War"..." - https://www.newsweek.com/russias-merchant-death-warns-donald-trump-his-life-danger-1793211
This also sends a clear message to Trump: "If you talk, we'll kill you."