 More officially, in September he also allowed the Czechoslovak Air Force to fly its newly purchased warplanes from Soviet bases, over Romania.Beneš and Heliodor Píka later testified that Comnen had respected his promises to Czechoslovakia.As argued by journalist Alexander Bregman and historian Anna M. Cienciala, this exposes as false the claims publicized by Soviet historiography, according to which Romania sabotaged the Czechoslovak–Soviet entente.