Intelligence gathered by Ukrainian experts from the battlefield stated that Chinese-made parts were found in a navigation system in drones that had previously used a Swiss system.
The transaction — the first rescue of a global bank since the financial crisis of 2008 — grants enormous clout to UBS, ridding it of its main rival.
The West blocked several Russian banks' access to the international SWIFT payments system soon after Moscow invaded Ukraine in February last year.
EU leaders agreed on Thursday to a ninth package of sanctions but talks were acrimonious, with Poland and the Baltic states that neighbor Russia campaigning for tougher measures.
Kaliningrad, which relies on railways and roads through Lithuania for most goods, has been cut off from some freight transport from mainland Russia since June 17.
The new law raises the stakes for multinationals trying to exit, and could be in place within weeks.
Discussions on possible rationing have gathered urgency after Russia halted gas supplies to Bulgaria and Poland last month.
Banks are having to quickly get to grips with a sharp rise in the risk of doing business as corporate and retail borrowers juggle higher loan costs with soaring costs.
China has told multinationals to sever ties with Lithuania or face being shut out of the Chinese market.
The global deal on corporate tax looks set to pit large members such as Germany, France and Italy against Ireland, Luxembourg and the Netherlands.
