Jackie Northam

President Trump has warned the U.S.

will hit hard if Iran kills protesters.

He reiterated that in a social media post Saturday evening, saying the U.S.

stands ready to help.

The protests that began at the end of December over the economy have quickly spread to all corners of Iran, with people shouting death to the dictator, meaning Supreme Leader Ayatollah Ali Khamenei.

Jackie Northam, NPR News.

Well, I talked to a number of analysts in the UK, France, and in India, just to get a sense of how the Venezuela operation was being viewed.

And, you know, there was muted reactions from a lot of governments, in part because leaders don't want to annoy Trump.

But people in many countries are very worried, not only about the disrespect for international law, but more broadly, is where does this stop?

Trump is talking about acquiring Greenland, even by force, certainly in Cuba, Colombia, Mexico.

I spoke with Sylvie Kaufmann, and she's a foreign affairs columnist at Le Monde in Paris.

And she said that's a real concern for people.

And of course, Mary Louise, allies are wondering if relations with the U.S., you know, alliances such as NATO will hold up if something does happen in Greenland.

It's a real challenge.

It has throughout this first term.

It seems if a country does something Trump doesn't like, he'll retaliate, like with increased tariffs or sanctions.

I spoke with Pratap Mehta, and he's a senior fellow at the Center for Policy Research in Delhi.

And he says at the beginning of Trump's second term, a lot of leaders thought this action was simply transactional.

He's after resources or money.

But Mehta says a year on, they see there's something else driving Trump's actions.