President Donald Trump has called for NATO members to significantly increase their spending on defense, suggesting a target of 5% of gross domestic product to go toward military spending. What To Know: Trump reiterated the 5% of GDP spending goal on Monday following his inauguration,

European countries have ramped up defense budgets since Russia's all-out invasion of Ukraine in 2022. And many leaders have said the increased spending must continue to counter the growing military threat from Moscow.