COW Code for State A
COW Code for State B
Calendar Year
a&b's bilat trade/a's GDP
a&b's bilat trade/b's GDP
a's DEMOC-AUTOC score: Polity3
b's DEMOC-AUTOC score: Polity3
states a&b formally allied=1
militarized dispute at t+1
ln distance, min port-to-port
ln large/small capab ratio
jnt IGO members, interpolated
a's total X+M/a's GDP
b's total X+M/b's GDP
=1 if both states in dyad are minor powers
=1 if states are not contiguous