WARSAW, Dec 18 (Reuters) - Poland decided to add several

media and telecommunication firms to its list of strategic

companies, which means their takeover will not be possible

without government consent, Prime Minister Donald Tusk said on

Wednesday.

Tusk had earlier said that private broadcasters TVN, owned by

U.S. company Warner Discovery, and Polsat would

be added to the list, highlighting increased concern about

foreign interference. Tusk cited "hybrid war" against countries

in the region.

Romania's top court annulled an ongoing presidential election

this month after accusations of Russian meddling, particularly

on social media. Russia denies interfering in elections in

foreign countries.

"We adopted a regulation... on the basis of which we added to a

list of entities subject to protection... companies such as

Cyfrowy Polsat ( CYFWF ), P4 - the company that operates Play, TVN, Polsat

television, T-Mobile and WB Electronics," Tusk said on Wednesday

after a cabinet meeting.

"This list already includes previously protected companies...

such as Tauron Polska, Orlen ( PSKOF ), Emitel, Grupa Azoty, Gaspol. I do

not need to justify the necessity for protection against the

risk of these companies, which are key to the security of the

Polish state, falling into the wrong hands."

Poland's list of strategic companies included mostly energy,

chemical and telecommunications companies until now.