Scott Horsley

In one of his most high-profile appearances since leaving the White House, former President Obama warned tens of thousands of young people in Berlin that "the international order is at a crossroads."

President Trump was also in Europe, chiding NATO members while in Belgium for not living up to agreed-upon defense-spending levels.

Obama delivered an implicit rebuke to Trump's "America First" policy, saying in the modern, interconnected world, "we can't isolate ourselves. We can't hide behind a wall."

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Updated at 3:02 p.m. ET.

The Trump administration says it can balance the federal budget within a decade. Its proposal calls for significant cuts to social safety net programs and assumes more robust economic growth.

The administration released what it calls a "Taxpayer First" budget on Tuesday.

"This is, I think, the first time in a long time that an administration has written a budget through the eyes of the people who are actually paying the taxes," White House Budget Director Mick Mulvaney told reporters in a briefing on Monday.

As President Trump begins his first overseas trip, Americans have widely differing views of his approach to foreign policy. But a majority of both Republicans and Democrats want the U.S. to continue its robust engagement with the rest of the world.

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President Trump now says he made the decision to fire FBI Director James Comey on his own.

That's a shift from the original White House statement, which said the president acted on the recommendation of Attorney General Jeff Sessions.

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