Russia gave unequivocal pledge of loyalty to Czechs if French did help. (". . . the Czechoslovak Government addressed a formal inquiry to my Government as to whether the Soviet Union is prepared in accordance with the Soviet‑Czech pact, to render Czechoslovakia immediate and effective aid if France, loyal to her obligations, will render similar assistance, to which my Government gave a clear answer in the affirmative." Doc. Int. Affairs 1938, Vol. II, p. 225.) Russia warned Poland not to attack Czechoslovakia. (Lee, p. 340; Survey 1938, Vol. I, p. 696.) - 78th Congress, 2d Session House Document No. 541 "Events Leading up to World War II".
Probably, in 1938. But no long-term peace with the Nazis was possible, any more than you can "make peace" with a rabid dog.
Nazism had to be defeated and destroyed. By 1938 it was already far too late to do this without a major war.