A top NATO commander says the alliance will briefly move its allied joint force command from Italy to Romania as NATO continues to react to Russia's moves in Ukraine.

Admiral Mark Ferguson, Commander of Allied Joint Force Command based in Naples, Italy, said the command will be based in Cincu, central Romania, for 12 days in June, to support a NATO exercise involving 1,000 troops from 21 NATO states.

Cincu is Romania's largest military shooting range, some 180 kilometers (112 miles) northwest of Bucharest.

"This deployment will be the first time a NATO Joint Force Command Headquarters has deployed to Romania," Ferguson said Tuesday.

At the same time, NATO will conduct exercises in Poland, the Baltics and the Baltic Sea.