The cooperation rate of Armenia and the NATO is considerably behind that of the NATO and Russia, Armenian defense minister Serge Sargsian said today when answering journalists' questions. In his words, as reported by "Arminfo" agency, NATO chief George Robertson's visit to Russia and the three South Caucasian countries was conditioned by convenience in business respect. Besides, the minister added, if an official of such a rank makes a visit to the region, of course he should visit all the countries and not only an individual one.