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Vice President Kamala Harris on Sunday said she believes sanctions on Russia would absolutely deter President Vladimir Putin, despite she and President Biden saying that he has already made up his mind on a potential invasion. 

Harris made her remarks to reporters at the Munich Security Conference in Munich, Germany, amid fears of a Russian invasion in Ukraine. The vice president called the sanctions "some of the greatest sanctions, if not the strongest," that the U.S. has ever issued. 

"As I articulated yesterday, it is directed at institutions — in particular, financial institutions — and individuals, and it will exact absolute harm for the Russian economy and their government," Harris said. 

KAMALA HARRIS MEETS WITH UKRAINE'S ZELENSKYY, PLEDGES UNIFIED ACTION IF RUSSIA INVADES: ‘A DECISIVE MOMENT’

Vice President Kamala Harris speaks to members of the media at her hotel after attending the Munich Security Conference, Sunday, Feb. 20, 2022, in Munich.

Vice President Kamala Harris speaks to members of the media at her hotel after attending the Munich Security Conference, Sunday, Feb. 20, 2022, in Munich.  (AP Photo/Andrew Harnik, Pool)

Her comments come after Ukrainian President Volodymyr Zelenskyy pleaded for the U.S. and allies to impose sanctions against Russia now -- before a potential invasion of Ukraine happens. 

"We don't need your sanctions after the bombardment will happen, and after our country will be fired at or after we will have no borders or after we will have no economy or parts of our country will be occupied," Zelenskyy said at the security conference. "Why would we need those sanctions then?"

In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy, center, inspects weapons during a visit to Ukrainian coast guards in Mariupol, Donetsk region, eastern Ukraine, Thursday, Feb. 17, 2022.

In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy, center, inspects weapons during a visit to Ukrainian coast guards in Mariupol, Donetsk region, eastern Ukraine, Thursday, Feb. 17, 2022. (Ukrainian Presidential Press Office via AP)

Harris was asked by a reporter if she felt the looming threat of sanctions would deter Putin, despite saying the president has already made a decision on Ukraine.

"Absolut- — we strongly believe — and remember also that the sanctions are a product not only of our perspective as the United States but a shared perspective among our Allies.  And the Allied relationship is such that we have agreed that the deterrence effect of these sanctions is still a meaningful one, especially because -- remember, also -- we still sincerely hope that there is a diplomatic path out of this moment," Harris said, according to the White House

Vice President Kamala Harris speaks to members of the media at her hotel after attending the Munich Security Conference, Sunday, Feb. 20, 2022, in Munich.

Vice President Kamala Harris speaks to members of the media at her hotel after attending the Munich Security Conference, Sunday, Feb. 20, 2022, in Munich.  (AP Photo/Andrew Harnik, Pool)

"And within the context then of the fact that that window is still opening, altho- — open, although it is absolutely narrowing — but within the context of a diplomatic path still being open, the deterrence effect, we believe, has merit," she added. 

On Sunday, shelling in Ukraine increased in areas helped by Russia-backed rebels. Putin has amassed more than 150,000 Russian forces at the Ukrainian border and recently oversaw tests of nuclear-capable missiles.

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Amid the current build-up of troops at the border, NATO Secretary-General Jens Stoltenberg on Sunday said it appeared "Russia is preparing for an invasion of Ukraine."

A Ukrainian serviceman leaves a command post to start his shift at a front-line position outside Popasna, in the Luhansk region, eastern Ukraine, Sunday, Feb. 20, 2022.

A Ukrainian serviceman leaves a command post to start his shift at a front-line position outside Popasna, in the Luhansk region, eastern Ukraine, Sunday, Feb. 20, 2022. (AP Photo/Vadim Ghirda)

While Stoltenberg stressed that it was not too late to change course against an armed attack, the secretary-general noted there is a "new normal in European security."

On Sunday, Harris was asked during the security conference about how the U.S. would "disentangle" itself from the conflict after imposing sanctions and possible military action. 

"I don’t — we don’t consider ourselves to be entangled," Harris said, adding that our purpose is to be aligned with our allies.

"I mean, let’s really take a moment to understand the significance of what we’re talking about. It’s been over 70 years. And through those 70 years, as I mentioned yesterday, there has been peace and security. We are talking about the real possibility of war in Europe," she said. 

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"So our position is, for us, very clear, which is as a leader — which we have been, bringing together the Allies, working together around our collective and unified position — that we would all not just prefer, we desire, we believe it is in the best interest of all that there is a diplomatic end to this moment. And so where do we want this to end? That is where we want it to end," Harris continued. 

Russia has said that it has no plans to attack Ukraine.

Fox News' Jessica Chasmar and the Associated Press contributed to this report.