Estonia on Wednesday summoned the Russian ambassador and formally protested about the violation of its airspace by a Russian helicopter on Tuesday, the foreign ministry said.
"Estonia considers this an extremely serious and regrettable incident that is completely unacceptable," the ministry said in a release, saying the helicopter had flown over a point in the southeast of the small Baltic nation without permission. Estonia made an identical complaint to Moscow in June.
(Reporting by David Ljunggren; editing by Jonathan Oatis)
