Only 11 NATO members currently meet the 2% target as an enduring minimum for defence spending. Major NATO countries such as Germany and Canada spend only 1.5% of their GDP on defence. Biden is unlikely to agree with Poland's proposal.
Poland's spree, by contrast, represents almost a doubling of defence spending compared with the previous year.
However, some experts question whether Warsaw can maintain such a high level of spending over the longer term.
NATO leaders agreed on a more ambitious military spending goal at a summit in Vilnius this week, but the case of the alliance's big spender, Poland, highlights the complexity of spending the money effectively.
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