The Only One by Egantx7

With a standing military of about 200, this nation's military is one-fifth the size of Luxembourg's, and is the only member of NATO without a standing army. Name this founding member of NATO which is a member mostly because of location, location, location.

What is the only branch of the Orthodox Church to use a romance language?

On 1 May 1914, Martha died at the Cincinnati Zoo, and for a time had been the only living specimen of Ectopistes migratorius. By what more common name is Martha's extinct species known?

Published in 1997, this novel's appearance in Japan sparked a lawsuit by Mineko Iwasaki, whose interviews this novel had been based on, though she never gave permission for their publication, even if names were changed, citing the strict confidentiality under which she had operated. Identify this novel which spent two years on the New York Times Best Sellers List, the only novel written by Arthur Golden.

What is the only nation whose heads of state are a co-principality (one leader is elected, while the other is appointed by another head of state)?

What is the only moon in our solar system to have a notable atmosphere, and the only object in the solar system other than Earth to have stable, standing liquids on its surface?

The trailer for the 1986 film Maximum Overdrive may have been scarier than the actual film, as it shows this man, the film's director (and by his own admission coked out of his mind) pointing at the audience and saying I'm gonna scare the Hell out of you!, before cutting to a close up of Yeardley Smith screaming. Maximum Overdrive was the only film directed by which man?

Who is the only artist to win Grammys for Record of the Year, Album of the Year, Song of the Year, and Best New Artist of the Year in the same year?

Who is the only person two win two unshared Nobel Prizes?

A certain religious sculpture is generally named Madonna and Child, but today is known as The THIS CITY Madonna, named for the city it has spent most of its existence. The statue was stolen by the Nazis in 1944, and was later recovered in an Austrian salt mine. Name the city where this famous statue resides today at the Church of Our Lady, the only statue sculpted by Michelangelo to leave Italy in Michelangelo's lifetime. (edited at 11:20 pm, May 16, 2016 (EDT))

Ray Chapman (1891-1920) played his entire career for the Cleveland Indians, and his 334 career sacrifice hits remains in the top 10 all-time in MLB history. For what rather infamous moment, involving Yankees' pitcher Carl Mays, is Chapman an MLB "only one"?

This man is the only American male to win the Best Actor Award at Cannes, and the Oscar and BAFTA for Best Lead Actor for the same role, doing so for work in a 1985 film. This actor played Luis Molina, a prisoner working for the Brazilian secret police, opposite Raul Julia who is a prisoner working for leftist revolutionaries. The pair eventually fall in love. Name this American actor who holds this unique acting distinction,and whose last Oscar nomination was for his supporting role in A History of Violence.