ZAGREB, Feb 20 (Hina) - Prime Minister and Croatian Democratic Union (HDZ) leader Andrej Plenkovic has said that his Hungarian counterpart Viktor Orban, who is the chief of the Fidesz party, has made a mistake by publishing a controversial poster which accuses the European Commission and billionaire businessman George Soros of undermining Hungary's security, but stopped short of specifying whether Orban's political party should be expelled from the European People's Party (EPP) group in the European Parliament.
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