Description: For the achievement "Falling Out" We are required to "Nuke the capital of an Empire that was an ally at the turn beginning." So if you go to war, send the nuke, make peace, then create an alliance the next turn the nuke will hit the capital. After that the game will not advance to another turn, basically hard locking the game and making the achievement unattainable.

Steps to Reproduce:
1. Go to war with an enemy

2. Send a nuke to their capital

3. Make peace with the enemy

4. Join an alliance with the enemy

5. end turn

6. Nuke hits

7. Turn will not progress, cannot use units or talk to any leaders.

Expected Behavior: Turn should be able to go next, achievement should unlock, should be able to continue talking to the other nations.