Table 1.

Regression models of bilateral defense cooperation

(1)(2)(3)(4)
DCA bilateral  |$\times$|  DCAs0.020|$^{***}$|0.029|$^{***}$|0.018|$^{***}$|0.020|$^{***}$|
third-party(0.003)(0.003)(0.003)(0.003)
DCA bilateral|$-$|0.020|$^{***}$||$-$|0.026|$^{***}$||$-$|0.017|$^{***}$||$-$|0.019|$^{***}$|
(0.005)(0.005)(0.005)(0.005)
DCAs third-party0.009|$^{***}$|0.025|$^{***}$|0.008|$^{***}$|0.006|$^{***}$|
(0.001)(0.001)(0.001)(0.001)
Trade0.002|$^{***}$|0.002|$^{***}$|0.002|$^{***}$|
(0.001)(0.001)(0.001)
UNGA ideal point diff.|$-$|0.009|$^{***}$||$-$|0.008|$^{***}$||$-$|0.008|$^{***}$|
(0.001)(0.001)(0.001)
Alliance0.016|$^{***}$|0.015|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_i$||$-$|0.010|$^{***}$||$-$|0.009|$^{***}$||$-$|0.012|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_j$||$-$|0.004|$^{*}$||$-$|0.004|$^{*}$||$-$|0.006|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_i$|0.011|$^{***}$|0.010|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_j$|0.011|$^{***}$|0.010|$^{***}$|0.011|$^{***}$|
(0.002)(0.002)(0.002)
GDPcapita|$_i$|0.006|$^{***}$|0.006|$^{***}$|0.002
(0.001)(0.001)(0.002)
GDPcapita|$_j$|0.0020.002|$-$|0.002
(0.001)(0.001)(0.002)
Total ICEWS events0.019|$^{***}$|0.017|$^{***}$|0.018|$^{***}$|
(0.000)(0.000)(0.000)
Defense cooperation0.089|$^{***}$|
(lagged DV)(0.002)
Constant0.095|$^{***}$|0.026|$^{***}$|0.083|$^{**}$|0.153|$^{***}$|
(0.027)(0.000)(0.027)(0.032)
N315,650462,400315,650315,650
BIC|$-$|268,041.041|$-$|370,959.109|$-$|269,948.725|$-$|268,343.430
N dyads22,53229,07022,53222,532
Log-likelihood134,121.820185,505.643135,081.993134,361.651
|$\omega _{ij}$|YesNoYesYes
|$\alpha (u_i,u_j)$|YesNoYesYes
ModelFEFEFE2FE
(1)(2)(3)(4)
DCA bilateral  |$\times$|  DCAs0.020|$^{***}$|0.029|$^{***}$|0.018|$^{***}$|0.020|$^{***}$|
third-party(0.003)(0.003)(0.003)(0.003)
DCA bilateral|$-$|0.020|$^{***}$||$-$|0.026|$^{***}$||$-$|0.017|$^{***}$||$-$|0.019|$^{***}$|
(0.005)(0.005)(0.005)(0.005)
DCAs third-party0.009|$^{***}$|0.025|$^{***}$|0.008|$^{***}$|0.006|$^{***}$|
(0.001)(0.001)(0.001)(0.001)
Trade0.002|$^{***}$|0.002|$^{***}$|0.002|$^{***}$|
(0.001)(0.001)(0.001)
UNGA ideal point diff.|$-$|0.009|$^{***}$||$-$|0.008|$^{***}$||$-$|0.008|$^{***}$|
(0.001)(0.001)(0.001)
Alliance0.016|$^{***}$|0.015|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_i$||$-$|0.010|$^{***}$||$-$|0.009|$^{***}$||$-$|0.012|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_j$||$-$|0.004|$^{*}$||$-$|0.004|$^{*}$||$-$|0.006|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_i$|0.011|$^{***}$|0.010|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_j$|0.011|$^{***}$|0.010|$^{***}$|0.011|$^{***}$|
(0.002)(0.002)(0.002)
GDPcapita|$_i$|0.006|$^{***}$|0.006|$^{***}$|0.002
(0.001)(0.001)(0.002)
GDPcapita|$_j$|0.0020.002|$-$|0.002
(0.001)(0.001)(0.002)
Total ICEWS events0.019|$^{***}$|0.017|$^{***}$|0.018|$^{***}$|
(0.000)(0.000)(0.000)
Defense cooperation0.089|$^{***}$|
(lagged DV)(0.002)
Constant0.095|$^{***}$|0.026|$^{***}$|0.083|$^{**}$|0.153|$^{***}$|
(0.027)(0.000)(0.027)(0.032)
N315,650462,400315,650315,650
BIC|$-$|268,041.041|$-$|370,959.109|$-$|269,948.725|$-$|268,343.430
N dyads22,53229,07022,53222,532
Log-likelihood134,121.820185,505.643135,081.993134,361.651
|$\omega _{ij}$|YesNoYesYes
|$\alpha (u_i,u_j)$|YesNoYesYes
ModelFEFEFE2FE

Standard errors in parentheses.

|$^{*}$|  |$p\lt 0.05$|⁠, |$^{**}$|  |$p\lt 0.01$|⁠, |$^{***}$|  |$p\lt 0.001$|⁠.

Table 1.

Regression models of bilateral defense cooperation

(1)(2)(3)(4)
DCA bilateral  |$\times$|  DCAs0.020|$^{***}$|0.029|$^{***}$|0.018|$^{***}$|0.020|$^{***}$|
third-party(0.003)(0.003)(0.003)(0.003)
DCA bilateral|$-$|0.020|$^{***}$||$-$|0.026|$^{***}$||$-$|0.017|$^{***}$||$-$|0.019|$^{***}$|
(0.005)(0.005)(0.005)(0.005)
DCAs third-party0.009|$^{***}$|0.025|$^{***}$|0.008|$^{***}$|0.006|$^{***}$|
(0.001)(0.001)(0.001)(0.001)
Trade0.002|$^{***}$|0.002|$^{***}$|0.002|$^{***}$|
(0.001)(0.001)(0.001)
UNGA ideal point diff.|$-$|0.009|$^{***}$||$-$|0.008|$^{***}$||$-$|0.008|$^{***}$|
(0.001)(0.001)(0.001)
Alliance0.016|$^{***}$|0.015|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_i$||$-$|0.010|$^{***}$||$-$|0.009|$^{***}$||$-$|0.012|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_j$||$-$|0.004|$^{*}$||$-$|0.004|$^{*}$||$-$|0.006|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_i$|0.011|$^{***}$|0.010|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_j$|0.011|$^{***}$|0.010|$^{***}$|0.011|$^{***}$|
(0.002)(0.002)(0.002)
GDPcapita|$_i$|0.006|$^{***}$|0.006|$^{***}$|0.002
(0.001)(0.001)(0.002)
GDPcapita|$_j$|0.0020.002|$-$|0.002
(0.001)(0.001)(0.002)
Total ICEWS events0.019|$^{***}$|0.017|$^{***}$|0.018|$^{***}$|
(0.000)(0.000)(0.000)
Defense cooperation0.089|$^{***}$|
(lagged DV)(0.002)
Constant0.095|$^{***}$|0.026|$^{***}$|0.083|$^{**}$|0.153|$^{***}$|
(0.027)(0.000)(0.027)(0.032)
N315,650462,400315,650315,650
BIC|$-$|268,041.041|$-$|370,959.109|$-$|269,948.725|$-$|268,343.430
N dyads22,53229,07022,53222,532
Log-likelihood134,121.820185,505.643135,081.993134,361.651
|$\omega _{ij}$|YesNoYesYes
|$\alpha (u_i,u_j)$|YesNoYesYes
ModelFEFEFE2FE
(1)(2)(3)(4)
DCA bilateral  |$\times$|  DCAs0.020|$^{***}$|0.029|$^{***}$|0.018|$^{***}$|0.020|$^{***}$|
third-party(0.003)(0.003)(0.003)(0.003)
DCA bilateral|$-$|0.020|$^{***}$||$-$|0.026|$^{***}$||$-$|0.017|$^{***}$||$-$|0.019|$^{***}$|
(0.005)(0.005)(0.005)(0.005)
DCAs third-party0.009|$^{***}$|0.025|$^{***}$|0.008|$^{***}$|0.006|$^{***}$|
(0.001)(0.001)(0.001)(0.001)
Trade0.002|$^{***}$|0.002|$^{***}$|0.002|$^{***}$|
(0.001)(0.001)(0.001)
UNGA ideal point diff.|$-$|0.009|$^{***}$||$-$|0.008|$^{***}$||$-$|0.008|$^{***}$|
(0.001)(0.001)(0.001)
Alliance0.016|$^{***}$|0.015|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_i$||$-$|0.010|$^{***}$||$-$|0.009|$^{***}$||$-$|0.012|$^{***}$|
(0.002)(0.002)(0.002)
Democracy|$_j$||$-$|0.004|$^{*}$||$-$|0.004|$^{*}$||$-$|0.006|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_i$|0.011|$^{***}$|0.010|$^{***}$|0.010|$^{***}$|
(0.002)(0.002)(0.002)
Capabilities|$_j$|0.011|$^{***}$|0.010|$^{***}$|0.011|$^{***}$|
(0.002)(0.002)(0.002)
GDPcapita|$_i$|0.006|$^{***}$|0.006|$^{***}$|0.002
(0.001)(0.001)(0.002)
GDPcapita|$_j$|0.0020.002|$-$|0.002
(0.001)(0.001)(0.002)
Total ICEWS events0.019|$^{***}$|0.017|$^{***}$|0.018|$^{***}$|
(0.000)(0.000)(0.000)
Defense cooperation0.089|$^{***}$|
(lagged DV)(0.002)
Constant0.095|$^{***}$|0.026|$^{***}$|0.083|$^{**}$|0.153|$^{***}$|
(0.027)(0.000)(0.027)(0.032)
N315,650462,400315,650315,650
BIC|$-$|268,041.041|$-$|370,959.109|$-$|269,948.725|$-$|268,343.430
N dyads22,53229,07022,53222,532
Log-likelihood134,121.820185,505.643135,081.993134,361.651
|$\omega _{ij}$|YesNoYesYes
|$\alpha (u_i,u_j)$|YesNoYesYes
ModelFEFEFE2FE

Standard errors in parentheses.

|$^{*}$|  |$p\lt 0.05$|⁠, |$^{**}$|  |$p\lt 0.01$|⁠, |$^{***}$|  |$p\lt 0.001$|⁠.

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