
When my teammate tries to fortify from Tripoli, Ghana is not a choice, while Kenya and Cameroon are. I assume they are options because they are adjacent to green countries, while Ghana is connected through several reds.
Therefore, fortification only works to chained own countries or teammate countries that are adjacent to any own country chained to the country I am fortifying from? Or is does the teammate country have to be adjacent to the country that I am fortifying from?