Research ReportCRS Legal SidebarVersion 4
LSB11256
The North Atlantic Treaty: U.S. Legal Obligations and Congressional Authorities
Published Jan 6, 2025Updated Jun 21, 2025
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What this is
The Congressional Research Service is a nonpartisan policy and legal analysis arm of the Library of Congress. CRS reports are written for members of Congress and their staff, not the public — but they’re made available openly through Congress.gov.