Ukraine is negotiating the possibility of receiving S-300 missiles from countries who have them in their arsenals.
Source: Oleksii Reznikov, the Minister of Defence of Ukraine, during a briefing at the Ukraine-Ukrinform media centre on 1 December
Quote: "S-300 missiles are functioning very effectively. The point is that they were not produced in Ukraine, meaning that we have no means of producing S-300 missiles, so we are using existing stocks.
We are currently negotiating with the defence ministers of all countries that have S-300s in service regarding the possibility of replenishing this stock of missiles from their warehouses and arsenals."