They said they did not know what prompted the increase in Soviet activity.

He also notes that the job of monitoring Soviet activities goes on with or without arms control agreements.

The reader cannot understand Soviet activities in the third world without some understanding of these changes.

This probably has to do with the secrecy surrounding Soviet military activities at the time.

About a third of them focused on Soviet activities in New York.

Soviet activity in Sweden is hard to fit with its now-constructive behavior elsewhere.

By 1945, some 200,000 messages had been transcribed, a measure of Soviet activity.

I devoted the next five years largely to Soviet activities.

However, Soviet activities subsequently declined due to the discovery of extensive natural gas resources.

As you all know, early yesterday saw a vast increase in Soviet naval activity.