Bratislava, Feb. 15 -- US Secretary of State Marco Rubio stated that Washington has no basis to challenge assessments made by several European governments regarding the alleged poisoning of Russian opposition leader Alexey Navalny, during a joint press conference with Slovak Prime Minister Robert Fico.

Speaking about his visit to Slovakia, Rubio acknowledged the findings cited by European nations. "Sometimes countries go out and do their thing based on the intelligence they've gathered. We are obviously aware of the report. It's a troubling report."

He added that the United States would not dispute those conclusions. "We don't have any reason to question it, or we're not disputing or getting into a fight with these countries over it, bu...