Kerensky leading SU for the while is just a bug.
About Spain:
Code:
#### The Second Meeting at Hendaye
event = {
id = 1000737
random = no
country = GER
decision = {
NOT = { alliance = { country = ENG country = SPA } }
NOT = { alliance = { country = GER country = SPA } }
NOT = { war = { country = GER country = SPA } }
NOT = { war = { country = GER country = SOV } }
war = { country = GER country = ENG }
event = 1000601 #Victory parade in Berlin
}
decision_trigger = {
garrison = { country = -3 province = 67 size = 3 } #Garrison border of France and Spain
garrison = { country = -3 province = 83 size = 3 }
garrison = { country = -3 province = 80 size = 3 }
}
trigger = {
NOT = { alliance = { country = GER country = SPA } }
NOT = { war = { country = GER country = SPA } }
NOT = { war = { country = GER country = SOV } }
war = { country = GER country = ENG }
event = 1000601 #Victory parade in Berlin
}
name = 1000737name
desc = 1000737desc
style = 2
picture = "hendaye2"
decision_picture = "hendayedecision"
date = { day = 0 month = january year = 1939 }
offset = 30
deathdate = { day = 29 month = december year = 1999 }
action = {
name = 1000737a
ai_chance = 100
command = { type = alliance which = SPA } #Entry into the Axis
}
action = {
name = 1000737b
ai_chance = 0
command = { }
}
}
And IIRC there's also chance for the Spanish to jump into Axcis when you invade Britain. Last, but not least, if you just want to take out Britain, you could also ignore Spain at all, as during "Collapse of the British Empire" chain said province might fall straight into Spanish hands (this is not guaranteed, though).