RAF MILDENHALL, England -- Three NATO nations assumed control on Thursday of a strengthened Baltic air policing mission from the U.S. Air Force amid the worsening crisis in neighboring Ukraine.
Separately, Canada is sending six interceptors to Romania as a sign of allied solidarity with its east European members bordering Ukraine and Russia.
Poland, Britain and Denmark are providing a total of 12 fighters to replace 10 F-15C Eagles from RAF Lakenheath, England, according to a NATO statement. The three nations are scheduled to operate the mission for four months.
Additionally, the French deployed four jets to Poland to replace the MiG-29s Poland sent to the Baltics, a NATO official said.
The Baltic mission normally consists of four fighters provided by a single NATO nation to serve as a rapid-reaction force to intercept unidentified or suspicious planes in or near Baltic airspace. The three Baltic nations -- Estonia, Latvia and Lithuania -- don't possess fighter jets capable of patrolling their own airspace.
"We've tripled the air presence, roughly, in the region and the purpose is to show an air presence, to demonstrate commitment to NATO solidarity and to be able to respond appropriately to any inappropriate activity by other parties," Gen. Adrian Bradshaw, NATO's deputy supreme commander, said in a press release.
Poland and the United Kingdom will fly out of Siauliai air base, Lithuania, the traditional base of the mission since its inception in 2004. Danish planes will fly out of Amari air base, Estonia, which Lakenheath's airmen recently helped certify for NATO use. The French jets will operate from the Malbork airbase in Poland, the NATO statement said.
Lakenheath initially deployed four F-15Cs and about 150 airmen for the mission in early January, but the Baltics requested additional security as Russia was moving to annex Crimea from Ukraine at the time.
The change of responsibility comes just days after NATO planes scrambled to intercept a Russian aircraft, a NATO official said in a telephone interview. The aircraft was flying over international waters on Monday, but had not filed a flight plan or used a transponder detectable by civilian air traffic control.
Lt. Gen. Joachim Wundrak, commander of NATO's Combined Air Operations Center in Uedem, Germany, has previously complained about such practices by Russian military flights. He said that while they were not illegal, they created safety concerns for NATO officials who scrambled jets to mark the position of the Russian planes for civilian air traffic.
"We would like to see (the Russians) more following international civil procedures, and that would make our life easier," Wundrak said last month.
Even before tensions mounted over the crisis in Ukraine, NATO reported that in 2012 their jets scrambled 46 times in the Baltic region.