I am working with the global terrorism database in R

I am trying to make a subset from the gtd called United Kingdom to include Great Britian and Northern Ireland.

I can do it for them individually with the code

```
 uk <- subset(x=gtd, country_txt=="Northern Ireland")

```

How can I also make this subset include data for Great Britian? I understand why using "&" doesn't work, but I don't know the right command to form the correct subset.