Correlation between 3 independent samples

Question

I performed an experiment where participants from 3 countries filles a questionaire. I wish to know if the result from 1 country can be predictive of the results from another country. I dont think that regression is a good choice here as each observation is from 1 country only so I cant fill an independent and dependent variables that will both have values in the data set. I though maybe on correlation ? any other ideas? the dataset looks like this:

 | France |US  |Israel|
 | -0.3   |NA  |NA    |
 |NA      |-0.5|NA    |
 |NA      |NA  |0.7   |

I would appreciate any help to code this in r