Send him to the US
From Create Your Own Story
You believe that Voux-prez will do something suspicious and betray you if you establish an alliance with him. So you reject his offer, and later that night, you catch him attempting to kill you with a knife. So you immediately have a fight, and you manage to win. Using your syringe sedative, you inject him with it and send him to the US. 2 days later, you get a call from M, congratulating you for completing the assignment of sending Voux-prez to the US for further interrogation, and has revealed even further and more relevant information. But the bad news is, the nuclear bomb has already been smuggled into Paris and will detonate in 11 days.