Mr Zelensky, for his part, mixed gravitas and humour as he spoke with Mr Biden and to the American people. Occasionally switching into serviceable English to accentuate the connection with his audience, he called the US aid to Ukraine an "investment" that will strengthen global security. It was an interesting choice of words - and one he repeated in his address to Congress. American aid was not "charity", but money spent with a purpose and a potential for future return.
