The Latest on President Donald Trump (all times local):

4:15 p.m.

President Donald Trump is on his way to Finland for a high-stakes summit with Russia's Vladimir Putin.

Trump's plane departed Glasgow, Scotland, just after 4 p.m. local time Sunday for the approximately three-hour flight to the Finnish capital, Helsinki.

The president has no public appearances planned after his nighttime arrival. He is due to meet with Putin on Monday.

Trump and his wife, Melania, spent the weekend at his eponymous golf resort in Turnberry, Scotland, about an hour's drive from Glasgow.

The president hit the links both days. On Saturday, he appeared to wave to a group of people who staged a protest picnic near several holes of the course that are visible from a nearby beach.

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4 p.m.

President Donald Trump is describing the European Union as a "foe" in an interview taped in Scotland.

Trump told CBS News in an interview Saturday that he thinks the U.S. has "a lot of foes," including the bloc of European nations that are among America's closest allies.

He says, "I think the European Union is a foe, what they do to us in trade." He adds: "You wouldn't think of the European Union, but they're a foe."

He also says that Russia is a foe "in certain respects" and that China is a foe "economically." He says of China: "But that doesn't mean they are bad. It doesn't mean anything. It means that they are competitive."

Trump is departing for Helsinki on Sunday for a summit with Russian President Vladimir Putin on Monday.

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3:40 p.m.

A U.S. senator says it's inevitable that Russia is going to interfere in American elections and that it's pointless to confront Russian President Vladimir Putin about it.

Sen. Rand Paul tells CNN's "State of the Union" that the U.S. shouldn't seek accountability from Russia. In Paul's words - "They're another country. They're going to spy on us. They do spy on us. They're going to interfere in our elections. We also do the same."

The Kentucky Republican says Russian interference in the 2016 U.S. presidential election isn't "morally equivalent" to U.S. interference in Russian elections. But he says, "I think in their mind it is."

Paul also says Putin isn't going to extradite the 12 Russian military intelligence officials charged with hacking Democrats. So Paul says "it'd be a moot point" for President Donald Trump to ask about it at their summit Monday.

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2:50 p.m.

National security adviser John Bolton says President Donald Trump has a stronger hand going into the Russia summit because of U.S. charges against 12 Russian military intelligence officials related to the hacking of Democratic targets in the 2016 presidential election.

Bolton tells ABC's "This Week" on Sunday that the indictments show that the American justice system is aware of Russian efforts to meddle in U.S. elections.

He says Trump can now say to Russian President Vladimir Putin that "this is a serious matter that we need to talk about."

Trump has said he will raise the issue when he sits down with Putin in Helsinki on Monday.

Bolton also says he finds it "hard to believe" that the Russian intelligence officials could conduct such an operation without Putin's knowledge.

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2:35 p.m.

The top Democrat on the U.S. Senate Intelligence Committee says he's worried about President Donald Trump meeting one on one with Russia's Vladimir Putin during their summit in Finland.

U.S. Sen. Mark Warner of Virginia says, "We know that Trump doesn't do a lot of prep work for these meetings. He kind of goes in and wings it."

Warner notes Putin's KGB background and fears Putin could "take advantage" of Trump during Monday's summit.

Warner says he'd "feel much better if there were other Americans in the room making sure that we make the point that the first and top point of this agenda should be no further Russian interference in our elections."

Warner tells NBC's "Meet the Press" on Sunday that Trump "has been completely reluctant to call out Putin as a bad actor."

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2:20 p.m.

President Donald Trump's ambassador to Moscow says he hopes Trump and Russia's Vladimir Putin have "a detailed conversation about where we might be able to find some overlapping and shared interests."

The leaders are holding a summit Monday in Helsinki.

Ambassador Jon Huntsman says the two countries now have a "fraught bilateral relationship." The diplomat adds that "the collective blood pressure between the United States and Russia is off-the-charts high, so it's a good thing these presidents are getting together."

Huntsman tells NBC's "Meet the Press" that he expects that the two presidents will talk about "everything from meddling in the election to areas where we have some shared interests."

He says, "The objective here is to meet, to put our cards on the table."

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11:56 a.m.

President Donald Trump says "nothing bad ... maybe some good" will come out of his summit Monday with Russia's Vladimir Putin in Finland.

Trump says in a television interview that he's going into the meeting with "low expectations. I'm not going with high expectations."

The president also tells CBS News that he "hadn't thought" about asking Putin to extradite the dozen Russian military intelligence officers indicted this past week in Washington on charges related to the hacking of Democratic targets in the 2016 U.S. election, but says that "certainly I'll be asking about it."

The United States has no extradition treaty with Moscow and can't compel Russia to hand over citizens, and a provision in Russia's constitution prohibits extraditing its citizens to foreign countries.