President Donald Trump and Russian President Vladimir Putin during a joint press conference after their July summit in Helsinki, Finland. Photo: Chris McGrath/Getty Images

President Trump told the Washington Post today he's considering cancelling a meeting later this week with Vladimir Putin after Russia seized three Ukrainian ships Sunday off the coast of Crimea. Ukrainian President Petro Poroshenko, meanwhile, told NBC News that he's asking Trump to make a demand of Putin in the meeting: "Get out of Ukraine."

The backdrop: Ukraine's parliament voted yesterday to impose martial law for 30 days in areas under threat from Russia, which is still holding 24 Ukrainian sailors after Sunday's incident. Poroshenko told CNN Russia was concentrating troops near the border, and the order was needed to "move troops more easily" and "defend our territorial integrity." The conflict is now likely to play a central role in the Trump-Putin meeting, assuming it goes ahead.

The details: As Alina Polyakova of Brookings writes for Axios Expert Voices, the attack on naval vessels now “opens a new front in Russia’s four-year aggression against Ukraine, which includes the ongoing land war in Ukraine's east and the occupation of Crimea."

  • Trump told the Post he's awaiting a report from his national security team about the incident, and said: “I don’t like that aggression. I don’t want that aggression at all."
  • Poroshenko told NBC that his military is prepared to impose "a huge price" on Russia if war comes. He also said "I count on the United States" to support Ukraine.
  • The Ukrainian president also told CNN that Secretary of State Mike Pompeo had pledged “full assistance, including military assistance."

All of that comes after President Trump initially seemed to place blame on both sides in the conflict, saying: “we do not like what's happening either way.”

Go deeper:

Go deeper

Supreme Court won't block Rhode Island's eased absentee voting rules

Photo: Robert Nickelsberg/Getty Images

The Supreme Court said Thursday that it will not block Rhode Island's move to ease its requirements for absentee voting during November's election.

Why it matters: The decision is a loss for Republicans, who had requested an emergency order as the state is expected to begin mailing out its ballots.

Breaking down Uber and Lyft's threat to suspend services in California

Illustration: Lazaro Gamio/Axios

Uber and Lyft are ratcheting up the fight with California’s state government over the classification of drivers with a move that would deprive Californians of their ride-hailing services (and halt driver income).

Driving the news: On Wednesday, both companies said that if a court doesn’t overturn or further pause a new ruling forcing them to reclassify California drivers as employees, they’ll suspend their services in the state until November’s election, when voters could potentially exempt them by passing a ballot measure.

Trump announces normalization of ties between Israel and UAE

Israel Prime Minister Netanyahu, Trump and UAE Crown Prince Mohammed bin Zayed. Photo: Artur Widak/NurPhoto; Samuel Corum; Odd Andersen/AFP via Getty Images

President Trump announced a "historic" deal Thursday which will see Israel and the UAE open full diplomatic relations and Israel suspend its annexation plans in the West Bank.

Why it matters: This is a major breakthrough for Israel, which lacks diplomatic recognition in many Middle Eastern countries but has been steadily improving relations in the Gulf, largely due to mutual antipathy toward Iran.