This is the 10573rd most frequent Russian word.
вмешательству
"Intervention" or "interference."
Here, "вмешательству" is used in the sense of external intervention, showing opposition to its occurrence.
Мы должны противостоять вмешательству извне.
We must resist intervention from outside.
Here, "вмешательству" indicates an act of intervening, specifically in matters not pertaining to oneself.
Его ответ сводился к вмешательству в чужие дела.
His response amounted to interfering in others' affairs.
Here, "вмешательству" is used to describe a potential act of interference, highlighting its prevention in a specific context.