LVIV, Ukraine (Reuters) - Ukrainian President Volodymyr Zelenskiy has signed a decree that combines all national TV channels into one platform, citing the importance of a "unified information policy" under martial law, his office said in a statement on Sunday.

       Ukrainian privately owned media channels have hitherto continued to operate since the start of the Russian invasion of Ukraine on Feb. 24. The decree announcement, made on the presidential website, did not specify how quickly the new measure would come into force.

       (Reporting by Pavel Polityuk Writing by Matthias Williams; Editing by Mark Potter)