In November, Lithuania carried out arrests as part of a criminal probe into sending incendiary devices on Western-bound planes.
According to Polish and Lithuanian media, the devices, including electric massagers implanted with a flammable substance, were sent from Lithuania to Britain in July and could be behind a lorry fire outside Warsaw.
The Lithuanian president’s chief security advisor said Moscow was behind the incidents.
UK anti-terrorism police in October said they were investigating how a parcel burst into flames at a depot earlier this year, after a similar case in Germany blamed on Russia.
“PROBLEM TO RESOLVE”
Tusk added Wednesday that Poland, which currently holds the rotating six-month presidency of the European Union, will speed up Ukraine’s process to join the bloc.
“The Polish presidency will break the impasse that has been evident in recent months,” Tusk said.
“And we will work together with Ukraine and our European partners … to speed up the accession process as much as possible,” he added.
Zelenskyy told reporters that “the sooner Ukraine is in the EU, the sooner Ukraine becomes a member of NATO … the sooner the whole of Europe will get the geopolitical certainty it needs”.