@roman_garev Des preuves mais il y en a plein , d’où les sanctions , allez par exemple l’interview par l’OSCE de deux militaires russes faits prisonniers par les Ukrainiens en 2015 :

The SMM visited the two individuals currently held at the military hospital in Kyiv, who received medical treatment. The SMM spoke to the two individuals without the presence of Ukrainian authorities. The SMM assessed their general condition and gathered their accounts about their capture.

One of them said he had received military education in the Russian Federation. Both individuals claimed that they were members of a unit of the Armed Forces of the Russian Federation. They claimed that they were on a reconnaissance mission. They were armed but had no orders to attack. Both of them said that they came under fire, got injured and were captured on 16 May 2015 at the contact line near Shchastya. One of them said he had received orders from his military unit to go to Ukraine ; he was to “rotate” after three months. Both of them said they had been to Ukraine “on missions” before. One of them stressed repeatedly that there were no Russian troops involved in fighting in Ukraine. Both said they were provided with a Ukrainian lawyer who visited them today.

Et la source :
https://www.osce.org/ukraine-smm/159296

Condamnés à plusieurs années de prison , ce sergent et cet officier russes furent échangés plus tard .
Le Kremlin et Lavrov ont préféré silencieux à ce sujet là aussi .