Yes. For any fund or portfolio of individual securities (companies), you can check any exposure to that of a particular nation under Research > Companies. Load the portfolio under the Load saved query option, then select which country you would like to check for exposure to under Geography > Countries. The list that is generated will show you any companies in the portfolio that have investments in that particular nation. 

In this example, let's say I want to check my portfolio's exposure to the United Kingdom. Companies with exposure to the United Kingdom will appear in the search results.