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You need to take a language course before you head to other countries. You can buy language phrase books which can help. There are language apps which you can use on a good mobile phone.
In my travels I have found that if you smile, speak slowly and try, then locals will help even if you do mangle things vocally.

so if i only speak english i will have problems communicating with people in the former soviet union then?  what about people like edward snowden who is an american who lives in moscow?  assuming he speaks only english and no russian then how would he go about communicating everyday with people in the streets of moscow or any other soviet city whether in estonia, armenia, georgia, ect....????

you are not edward snowden at all.... come here once you're edward snowden

I'm a bit wild so I would suggest learning "Thank you", "how much", and the numbers.
Google translate will do the rest until you get into the swing.
If you need toilet cleaner, condoms, anti bacterial cream, or whatever else, google up a picture and walk into the shop with your phone.

If you only speak English you may encounter problems; I suspect that Edward Snowden has picked up a bit of Russian in the 6 years he's lived there.