File Photo: Veterans of USS Nuclear Submarine "Growler" (SSG 577) welcome visitors to the submarine Growler at the Intrepid Sea, Air & Space Museum, Manhattan, New York, the United States, May 21, 2009. (Xinhua/Gu Xinrong)

WASHINGTON, Feb. 2 (Xinhua) -- The U.S. Defense Ministry on Friday officially published the 2018 Nuclear Posture Review (NPR), the guiding principle for the future U.S. policy seeking enhanced nuclear deterrent which is already the world's most powerful.

"The United States now faces a more diverse and advanced nuclear-threat environment than ever before, with considerable dynamism in potential adversaries' development and deployment programs for nuclear weapons and delivery systems," the document claimed.

The comprehensive report, which is largely in line with the 2010 review done by the Obama administration, reaffirms commitments to non-proliferation treaties but emphasizes the need to enhance capabilities to match with Russia, showing supports for U.S. nuclear modernization projects.

The review requires an "investment in a credible nuclear deterrent with diverse capabilities," chief Pentagon spokesperson Dana White said one day before its publication.

The review, aligned with the National Defense Strategy and the National Security Strategy, came nearly one year after U.S. President Donald Trump signed an executive order directing the review.