The Vatican says it will never stop insisting that marriage can only be between a man and a woman, after gay marriage initiatives scored big wins this week in the U.S. and Europe.

In a front-page article in Saturday's Vatican newspaper L'Osservatore Romano, the Holy See sought to frame itself as the lone voice of courage in opposing initiatives to give same-sex couples legal recognition.

Catholic teaching holds that homosexuals should be respected and treated with dignity but that homosexual acts are "intrinsically disordered." The Vatican also opposes same-sex marriage, insisting on the sanctity of marriage between a man and woman as the foundation for society.

Church compares same-sex marriage, polygamy

The Vatican's anti-gay marriage media blitz came after three U.S. states approved same-sex marriage by popular vote in the election that returned Barack Obama to the U.S. presidency, Spain upheld its gay marriage law and France pushed ahead with legislation that could see gay marriage legalized early next year.

"One might say the church, at least on this front, has been defeated," L'Osservatore Romano wrote. "But that's not the case."

The article insisted that Catholics were putting up a valiant fight to uphold church teaching in the face of "politically correct ideologies invading every culture of the world" that are backed by institutions like the United Nations, which last year passed a non-binding resolution condemning anti-gay discrimination.

"The church is called to present itself as the lone critic of modernity, the only check ... to the breakup of the anthropological structures on which human society was founded," it said.

Vatican spokesman the Rev. Federico Lombardi, for his part, said gays can have their rights protected by means other than through legal marital recognition.

He stressed that children should have a right to say they have a father and a mother.

"If not, then why not contemplate freely chosen polygamy, and naturally so as to not discriminate, polyandry?" he asked sarcastically. Polyandry is when a woman has two or more husbands.

Obama's re-election concerns Vatican

U.S. President Barack Obama endorsed same-sex marriage in May, and in Nov. 6 U.S. election two states legalized gay marriage. (Jason Reed/Reuters)

The U.S. election had been closely watched at the Vatican because of the strong divisions that erupted during the campaign between the Obama administration and U.S. bishops over gay marriage, which Obama endorsed in May. The administration and bishops clashed more vehemently over Obama's health care mandate requiring nearly all U.S. health insurance plans to cover contraception, which the church opposes.

The U.S. Conference of Catholic Bishops said the contraception mandate — which exempts houses of worship but applies to faith-affiliated employers — is a violation of religious freedom.

The Vatican's reaction to Obama's re-election was tinged with such lingering criticism, with Pope Benedict XVI congratulating Obama and praying that the ideals of freedom and justice continue to be upheld. Lombardi went further urging the administration to respect essential values in "promoting a culture of life and religious freedom" — Vatican buzzwords referring to abortion, contraception and the insurance mandate.

It was a far cry from the Vatican's enthusiastic response to Obama's election in 2008. Then, the pope termed Obama's election an "historic occasion" in a personal note of congratulations sent right after he won, a break with traditional Vatican protocol that usually sees official telegrams of congratulations sent on inauguration day.