Understood. Here are some potential responses available:
1. Diplomatic Response: As tensions escalate, diplomatic measures can be taken to open a dialogue and try to defuse the situation. Potentially involving neutral third parties to mediate could help.
2. Military Response: Russia might vow retaliation against Ukraine, using its own military capabilities. This could be either defensive or offensive, depending on the situation.
3. Political Response: Russia could take this incident to international platforms, such as the United Nations, to rally support or condemnation against Ukraine.
4. Economic Response: Considering economic sanctions against Ukraine could be another route. This might involve restricting trade and other economic activities.
5. Intelligence Response: Intensified clandestine activities or cyber warfare might provide a less overt, but effective response.
Ultimately, the choice of response would depend on the Russian government’s assessment of the situation and their larger strategic priorities.