FILE - This March 27, 2008, aerial file photo shows the Pentagon in Washington. The U.S. will protest what it called the unsafe interception of a U.S. spy plane by a Russian fighter over the Baltic Sea last week, an incident American officials said Sunday was an example of increasingly aggressive air operations by Moscow. The U.S. is protesting an intercept of a U.S. reconnaissance plane by a Russian fighter jet last week, calling it "unsafe... (Associated Press) 
 
 Pentagon spokesman Mark Wright on Sunday said the U.S. was filing a complaint to Russia after the April 7 incident over the Baltic Sea. "Unprofessional air intercepts have the potential to cause harm to all air crews involved. More importantly, the careless and unprofessional actions of a single pilot have the potential to escalate tensions between countries,'' Wright said. "This air activity takes place in the context of a changed security environment in view of Russia's aggression against Ukraine," he said. The encounter, which took place on the morning of April 7 but was only publicly discussed by the U.S.in recent days, is the latest incident of escalating friction between Russia and members of the North Atlantic Treaty Organization.
– A Russian fighter jet flying over the Baltic Sea last week flew a little too near a US reconnaissance plane in what the Pentagon calls "an unsafe and unprofessional manner," USA Today reports. Now the US is taking up the matter with Russian authorities, US officials tweeted. "Unprofessional air intercepts have the potential to cause harm to all air crews involved. More importantly, the careless and unprofessional actions of a single pilot have the potential to escalate tensions between countries," says a Pentagon rep. It's a matter of particular concern given the fact that "Russian air activity is expanding west into Europe and becoming more aggressive," the spokesman says, pointing to "the context of … Russia's aggression against Ukraine.'' The Russian plane was moving quickly when it came up behind the US aircraft, passing it twice, US officials say, per the Wall Street Journal. The exact distance between the two planes isn't clear, but it may have been as little as 20 feet, the Journal notes. A Russian military leader said the incident had involved "no emergency situations." A similar incident occurred between a Russian fighter jet and US reconnaissance plane a year ago this month, the AP reports.