Ukrainian media, citing the State Border Guard Service, report that the first Russian units have arrived in Belarus to take part in joint exercises, the active phase of which is scheduled for September. The contingent consists of several hundred Russian servicemen.
https://newsukraine.rbc.ua/news/russian-forces-arrive-in-belarus-for-joint-1754900972.html
https://x.com/wartranslated/status/1954837761237622847