@Olivier5,
I believe the movement created by Marie Le Pen's father was very largely a natural product of French politics. Russia may well have tried to help her in the last election, but I at least am unaware of any such assistance.
Similarly Trump is a natural product of the American political milieu, and he has successfully addressed a number of long ignored issues in great need of it. I'm not aware of any proof of material support for his campaign provided either directly or indirectly by Russia. Some may be found by very energetic politically motivated opponents, but after over 20 months of investigations they haven't found or acted on any yet. Throughout this period, however, we have seen ample of Russian payoffs to the Clintons and their foundation for Hillary's very strange actions as Secretary of State to approve and even expedite the takeover of the largest North American uranium mining operation by Russian Oligarchs.
I suspect Le Pen's Nationalist movement was deeply offensive and threatening to French political elites, just as has been Trump's here. In both cases the respective political elites have reacted with exaggerated outrage.
However Trump retains the support ( currently) of a majority of polled voters, and our economy is booming in a way we haven't seen in decades. I also suspect (but don't really know) the ongoing yellow shirt protests in France are coming, in large part, from former Le Pen supporters, indicating the domestic character of the political issues involved.
The history of Soviet/Russian intervention in the politics of western nations has usually been one involving actions to excite internal conflicts and disrupt internal confidence in their systems and governance. It is interesting to note that the Clinton campaign bought, through a party law firm and a third party Agent, a phony dossier on Trump likely prepared by Russian Intelligence agencies, and subseq1uently used as the justification for the ongoing investigation in deceptive applications to the special courts involved. Just who was "colluding" with the Russians?