Reuters recently revealed the details of an exchange between President Donald Trump and Russian President Vladimir Putin involving a nuclear treaty.
During their call, Reuters learned from its sources, "When Putin raised the possibility of extending the 2010 treaty, known as New START, Trump paused to ask his aides in an aside what the treaty was..."
RELATED: Vladimir Putin through the years
Vladimir Putin throughout the years
Vladimir Putin throughout the years
P362575 05: A class photo with Vladimir Putin, (fourth row, second from left) dated 1966 in St. Petersburg, Russia. (Photo by Laski Diffusion)
368975 01: (AMERICAS ONLY) FILE PHOTO: Russian President Vladimir Putin, right, poses for a photograph in this file photo with his parents Maria and Vladimir Putin in1985 just before his departure to Germany. Putin was sworn in as Russia''s second democratically elected president May 7, 2000, pledging to restore Russia as a great power. (Photo by Laski Diffusion/Newsmakers)
ITAR-TASS: LENINGRAD, USSR. Vladimir Putin seen with his wife Lyudmila and daughter Maria. File photo from family archive was taken in spring 1985. (Photo ITAR-TASS) (Photo by TASS via Getty Images)
St, petersburg mayor anatoly sobchak and austrian chancellor's wife christine vranitzky during a ceremony to name 'austria square' in downtown st, petersburg, austria has pledged to restore the square, future president of russia, vladimir putin, looks on, far left, september 1992. (Photo by: Sovfoto/UIG via Getty Images)
President George Bush meets with President Vladimir Putin at the Catherine Palace in St. Petersburg. Bush was meeting with Putin to thank him for signing the UN resolution demanding disarmament of Iraq. (Photo by ?? Brooks Kraft/CORBIS/Corbis via Getty Images)
KRASNODAR, RUSSIA: Russian acting President Vladimir Putin (L) talks to a boy (R) during his visit to the Children's regional clinic hospital in Krasnodar 11 February 2000. Putin arrived in Krasnodar for a two-day visit to take a part in the All Russia Conference on emergency measures to stabilise and develop the Russian agro-industrial complex. (ELECTRONIC IMAGE) (Photo credit should read SERGEI CHIRIKOV/AFP/Getty Images)
Uzbek president islam karimov helping rf president vladimir putin put on a traditional robe, uzbekistan, december 1999. (Photo by: Sovfoto/UIG via Getty Images)
President George W. Bush and First Lady Laura greet President Vladimir Putin and his wife Lyudmila outside of the Catherine Palace in St. Petersburg. Bush was meeting with Putin to thank him for signing the UN resolution demanding disarmament of Iraq. (Photo by ?? Brooks Kraft/CORBIS/Corbis via Getty Images)
MADRID, SPAIN - JANUARY4: Russian President Vladimir Putin (R) and Spanish Prime Minister Jose Maria Aznar (L) pose with their wives Ludmila Putin (2nd L) and Ana Botella before their lunch at Moncloa Palace June 14. Putin said he had no reason to believe the arrest of media magnate Vladimir Gusinsky was politically motivated but vowed to examine the case, which has stirred stormy protest in Moscow. (Photo credit should read SERGEI KARPUKHIN/AFP/Getty Images)
(GERMANY OUT) Vladimir Putin - Politician, Mayor St. Petersburg, Russia - signs an agreement about the marketing of inventions. Second Mayor and Senator of Economics of Hamburg Hans-Juergen Krupp (right) (Photo by Ambor/ullstein bild via Getty Images)
Moscow, russia, outgoing russian president boris yeltsin (r) shaking hands with russian prime minister and acting president vladimir putin (l) as he leaves moscow's kremlin, the seat of russian power,1999. (Photo by: Sovfoto/UIG via Getty Images)
Russian prime minister vladimir putin seen casting his vote during the elections to the state duma, at the polling station #2026 in moscow's kosygina street,moscow, russia, december 19, 1999. (Photo by: Sovfoto/UIG via Getty Images)
N362234 01: (FILE PHOTO) Russian Prime Minister Vladimir Putin visits Uzbekistan President Islam Karimov on August 16, 1999. President Boris Yeltsin announced on national television Friday, Dec. 31, 1999 that he had resigned and presidential elections will be held within 90 days to replace him. Yeltsin said he was stepping down immediately because he wanted Putin to succeed him. Putin, the country's most popular politician, immediately took control of the government and will serve as acting president until the elections. (photo by Laski Diffusion/Liaison Agency)
SEVEROMORSK, RUSSIA - APRIL 7: Russian President-elect Vladimir Putin watches the tactical exercises of Russia's Northern Fleet in the Barentsevo Sea, 06 April 2000. Vladimir Putin spent the night underwater in a nuclear submarine near the Arctic Circle. (Photo credit should read AFP/AFP/Getty Images)
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Leaks such as this one have become a source of concern for the president's team and the administration is reportedly investigating the matter.
The Hill quotes White House press secretary Sean Spicer as saying, "We're looking into the situation, yes, and it's very concerning,...Some of them are done in a way that the release of that information is clearly a breach of a lot of protocols and laws."
Spicer added, "The idea that you can't have a conversation without that information getting out is concerning,"
He was also asked about the exchange during a press briefing on Thursday, when he said, "The President's conversation with President Putin is a private call between the two of them, and I'm going to leave it at that."
In another call that did not end up being so private was the one between Trump and the Australian leader.
According to the Washington Post, "...President Trump blasted Australian Prime Minister Malcolm Turnbull over a refugee agreement and boasted about the magnitude of his electoral college win, according to senior U.S. officials...Then, 25 minutes into what was expected to be an hour-long call, Trump abruptly ended it."
A Huffington Post piece speculates about the reason behind a flurry of leaks from inside the Trump administration, noting, "...while leaks typically involve staffers sabotaging each other to improve their own standing or trying to scuttle policy ideas they find genuinely problematic, Trump's 2-week-old administration has a third category: leaks from White House and agency officials alarmed by the president's conduct."