Greece already betrayed the alliance they can do it again once England is weaker, after getting healed he should have kept fighting them the only realistic alliance would be pushing Greece in front of them and telling them if they don’t go all out against England he will keep attacking them. With plot armor this will work out but I played enough risk to know that having an ally that is likely to betray you is worse than having 2 enemies.
Greece already betrayed the alliance they can do it again once England is weaker, after getting healed he should have kept fighting them the only realistic alliance would be pushing Greece in front of them and telling them if they don’t go all out against England he will keep attacking them. With plot armor this will work out but I played enough risk to know that having an ally that is likely to betray you is worse than having 2 enemies.