Here's the biggest news you missed this weekend

Putin makes surprise visit to occupied Mariupol

Vladimir Putin flew to Mariupol for a surprise visit to Russian-occupied territory in Ukraine, according to a Kremlin press release. It was the Russian president's second trip to newly annexed territories after he visited Crimea on Saturday to mark the ninth anniversary of Russia's illegal takeover of the Black Sea peninsula. On Friday, the International Criminal Court issued arrest warrants or Putin and Maria Lvova-Belova because of their alleged involvement in the unlawful deportation and transfer of Ukrainian children to Russia.

• Putin's warrant: ICC members issue arrest warrant for Putin over war crimes

• Familiar scenarios: Ukrainian children taken to Russia brings back fear, memories of a similar Nazi effort

Donald Trump claims he will be arrested

Former President Donald Trump said he expects to be arrested Tuesday in connection with a Manhattan district attorney investigation for a $130,000 payment he made just before the 2016 election to silence adult film star Stormy Daniels about an earlier affair. Danielle Filson, a spokesperson for Manhattan's DA's office, declined to comment on Trump's statement. In the meantime, as uncertainty remained about whether any legal action was actually imminent, Trump called on his supporters to protest.

• What we know: Is Donald Trump likely to be arrested soon?

• Lawyer: Stormy Daniels met with Manhattan DA in Donald Trump hush money probe

Real quick

• Wyoming to ban abortion pills as nationwide battle continues

• The US invaded Iraq 20 years ago Sunday. These photos tell the story of the war.

• Earthquake in Ecuador and Peru: At least 14 people dead, widespread damage

• UK Mother's Day: Will and Kate share new royal family photos

• 186 banks could face Silicon Valley Bank's fate, according to a new study

March Madness: Upsets continue on the way to the Sweet 16

Chances are, your bracket has already been busted. It's been a wacky and unpredictable start to the NCAA men's basketball tournament, and the upsets continued this weekend as No. 1 seed Kansas was bounced by Arkansas, and No. 15 Princeton continued its Cinderella run with a win over Missouri in the second round. The last spots in the Sweet 16 were being determined in Sunday's games, including Fairleigh Dickinson's attempt to stay alive after becoming just the second 16 seed to win a first-round game. Get the latest March Madness updates.

• Opinion: This NCAA men's tournament is up for grabs like never before

• Keeping score: Complete 2023 NCAA men's tournament schedule, results and times

UBS buying Credit Suisse in effort to quell banking turmoil

Banking giant UBS is buying its smaller rival Credit Suisse in an effort to avoid further turmoil in global banking, Swiss President Alain Berset announced Sunday. Credit Suisse is designated by the Financial Stability Board as one of the world's globally systemic important banks, meaning regulators believe its uncontrolled failure would lead to dangerous ripples throughout the financial system. The acquisition of Credit Suisse follows the collapse of two U.S. banks last week that spurred a frantic response to prevent further bank panics. Still, global financial markets have been on edge since Credit Suisse's share price began plummeting this week.

• New study: Nearly 190 banks could face Silicon Valley Bank's fate

• Graphics: How often do American banks collapse?

North Korea launches missile into sea amid US-South Korea drills

North Korea launched a suspected missile toward the sea on Sunday, its neighbors said, as it ramps up testing activities in response to U.S.-South Korean military drills that it views as an invasion rehearsal. The missile launched from the North's northwestern region flew across the country before it landed in the waters off its east coast, South Korea's Joint Chiefs of Staff said in a statement. It said South Korea's military has boosted its surveillance posture and maintains a readiness in close coordination with the United States.

• Earlier this month: US-South Korea military drills begin after North Korea submarine missile tests

Taylor Swift kicks off Eras tour

Forty-four songs. Three hours and 15 minutes. And a packed stadium. On Friday night Taylor Swift kicked off The Eras Tour at State Farm Stadium near Phoenix. Not since the most vigorous days of Bruce Springsteen and his legendary live concerts has a mainstream artist packed so much music into one show. But it was even more than that. Numerous moving set pieces, squads of dancers and backup singers, a quick-change costume parade, confetti — Swift’s show is as ambitious as a Broadway musical.

• Taylor Swift set list: Here are the 44 songs on her epic Eras tour

• The CD turns 40: Inside the meteoric rise and fall of the shiny disc that changed music

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This is a compilation of stories from across the USA TODAY Network. Contributing: The Associated Press.

This article originally appeared on USA TODAY: Putin in Ukraine, Trump expects arrest, NCAA: Weekend's biggest news