The British people have voted out of the European Union.
The move has raised concerns that Hungary and the rest of Europe will be forever changed by the vote.
Prime Minister Viktor Orban launched a campaign in the U.K. press on Monday to urge Britons to keep their country within the EU, however they voted to leave in huge numbers.
"Hungary's government has been accused of being anti-EU many times but its pro-EU stance—as seen at present—reflects that it is committed to and strongly believes in the significance of the results the EU has achieved, even as it envisions the continent's future in a different way in many instances," Zoltán Kovács, government spokesperson, said this week.
The U.K.'s EU membership is important since a strong Europe may only be achieved with the co-operation of the large member states, Kovács said.
Hungary joined the bloc in 2004. It has been a major beneficiary of EU membership, receiving 4 billion to 5 billion Euros a year in the form of various support funds.
PM Orbán said in 1999 that "there's life outside the EU." The intervening years made Hungary a supporter of the bloc despite differences of opinions with the larger countries seeking tighter integration since Orban came to power in 2010.
Hungary's Socialist party on Sunday demanded "a definite, clear and straightforward answer" from PM Orbán as to whether he wants to lead Hungary out of the EU or hold a referendum on the country's EU membership.
Hungary plans to hold a national referendum in the autumn on another matter—on the EU's proposal to resettle asylum seekers from the Middle East and Afghanistan among the bloc's members under a mandatory scheme pushed by Brussels and Berlin.
The publication of the ad coincides with the 25th anniversary of the departure of the last Russian troops from Hungary. Hungary became a satellite country of the Soviet Union after World War II.
The prime minister, who is an advocate of strong nation states, shot into the political scene in 1989 with a speech demanding that Soviet soldiers leave Hungary.