- Find the countries' best response functions. To find the best response function of country 1, solve
max_{t}_{1}[*t*_{1}(*t*_{1} *t*_{2} 2)].

We find *b*_{1}(*t*_{2}) = (1/2)(*t*_{2} + 2). Similarly the best response function of country 2 is *b*_{2}(*t*_{1}) = (1/2)(*t*_{1} + 8).
- Solve for the Nash equilibria. A Nash equilibrium is a pair (
*t*_{1}*,*t*_{2}*) such that *t*_{1}* = *b*_{1}(*t*_{2}*) and *t*_{2}* =
*b*_{2}(*t*_{1}*). These two equations have a unique solution, (*t*_{1}, *t*_{2}) = (4,6).

We conclude that the game has a unique Nash equilibrium, (*t*_{1}*, *t*_{2}*) = (4,6).