WASHINGTON (AP) — President Donald Trump cast into doubt a key component of his upcoming trip to an international summit in Argentina as he suggested Tuesday he may cancel his planned sit-down with Russian President Vladimir Putin over Russia's seizure of three Ukrainian naval ships last weekend.

In an interview with The Washington Post, Trump said he would be receiving a "full report" from his national security team on Russia's recent actions in eastern Ukraine and the Black Sea. He said he would decide on a course afterward.

"Maybe I won't have the meeting," he said. "Maybe I won't even have...