Donald Trump's comments on NATO sow doubt in Poland. Polish President Andrzej Duda tries to reassure everyone.

He promises that he will maintain as strong an alliance as possible between the U.S. and his country. Poland spends nearly 4% of its GDP on defense, enough for the United States of a supposed Donald Trump to intervene in the event of an attack. But Warsaw is committed to the NATO motto: “One for all, all for one  ”