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President Biden’s speech in Warsaw came in the wake of the publication of new figures showing that US military aid for Ukraine is five times bigger than support from any other country.
Washington committed to spend nearly $47bn (£38bn) on arms and equipment for Ukraine’s armed forces between 24 January last year and 15 January this year.
The UK is the second largest donor with commitments of $5.1bn (£4.2bn).
Aside from military aid, researchers from the Kiel Institute for the World Economy highlighted a large gap between commitments on general budgetary support for Kyiv, and money actually paid out.
As of last month, “a mere 48% of the committed foreign budgetary support had been disbursed,” they say.
